This is a review for an exam, no need for explanations just answers. Thanks in advance!!

Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The total momentum before a collision is equal to the total momentum after the collision. A. This is true only for collisions between objects moving in the same direction. B. This is true for elastic collisions but not for inelastic collisions. C. This is true for any collision. D. This is not true for any collisions. E. This is true for inelastic collisions but not for elastic collisions. 2. An elastic collision is one in which A. no lasting deformation of either object occurs. B. both of the two colliding objects are made of a rubbery material. C. lasting deformation occurs for both of the colliding objects. D. lasting deformation occurs for one of the two colliding objects. E. one of the two colliding objects is made of a rubbery material. 3. An inelastic collision is one in which A. both of the two colliding objects are made of a very rigid material. both of the two colliding objects are made of a rubbery material. the two colliding objects deform, generate heat, or stick together. D. no lasting deformation of either object occurs. E. one of the two colliding objects is made of a rubbery material. 4. Which of these is the most accurate statement about momentum in a collision between two objects? A. Momentum is only conserved if the colliding objects bounce apart. B. Momentum is only conserved if the collision is elastic. C. Momentum is never conserved. D. Momentum is always conserved. E. Momentum is only conserved if the collision is inelastic. 5. A freight car moving at 20 m/s to the right strikes a stationary freight car of the same mass. If the collision is inelastic, A. the first car will move left and the second car will move right, both at 20 m/s. B. the first car will stop and the second car will move away at 20 m/s to the right. C. the first car will move left and the second car will move right, both at 10 m/s. D. both cars will move together to the right at 20 m/s. E. both cars will move together to the right at 10 m/s. 6. A freight car moving at 20 m/'s to the right strikes a stationary freight car of the same mass. If the collision is elastic, A. the first car will move left and the second car will move right, both at 10 m/s. B. the first car will stop and the second car will move away at 20 m/s to the right. C. both cars will move together to the right at 10 m/s. D. both cars will move together to the right at 20 m/s. E. the first car will move left and the second car will move right, both at 20 m/s.7. A green ball moving to the right at 3 m/s strikes a yellow ball moving to the left at 2 m/s. If the balls are equally massive and the collision is elastic, A. the green ball will move to the left at 2 m/s while the yellow ball moves right at 3 m/s. B. Both balls will stick together and move to the right at 1 m/s. C. The yellow ball will stop while the green ball moves left at 3 m/s. D. the green ball will move to the left at 3 m/s while the yellow ball moves right at 2 m/s. E. The green ball will stop while the yellow ball moves right at 2 m/'s. 8. A green ball moving to the right at 3 m/s strikes a yellow ball moving to the left at 2 m/s. If the balls are equally massive and the collision is inelastic, A. Both balls will stick together and move to the right at 1 m/s. B. The yellow ball will stop while the green ball moves left at 3 m/s. C. The green ball will stop while the yellow ball moves right at 2 m/s. D. the green ball will move to the left at 2 m/s while the yellow ball moves right at 3 m/s. E. the green ball will move to the left at 3 m/s while the yellow ball moves right at 2 m/s. 9. A freight car moving at 30 m/s to the right strikes a stationary freight car of the same mass. If the two cars couple together, what will be their velocity after the collision? A. 30 m/'s to the right B. 15 m/s to the left C. 15 m/'s to the right D. 30 m/s to the left E. 0 m/s 10. A green ball moving to the right at 2 m/s strikes a yellow ball moving to the left at 3 m/s. If the balls are equally massive and the collision is elastic, A. the green ball will move to the left at 2 m/s while the yellow ball moves right at 3 m/s. . The yellow ball will stop while the green ball moves left at 1 m/s. C. the green ball will move to the left at 3 m/s while the yellow ball moves right at 2 m/s. D. The yellow ball will stop while the green ball moves left at 3 m/s. E. The green ball will stop while the yellow ball moves right at 2 m/s. 11. Impulse is the product of A. force and velocity. B. velocity and acceleration. C. mass and acceleration. D. force and time. E. force and inertia. 12. Impulse is equal to the change in . of the object on which the impulse acts. A. force. B. acceleration. C. velocity. D. momentum. E. mass.13. In order to minimize the force acting on your bare hand when you catch a baseball, you should A. move your hand toward the ball as you catch it. B. think happy thoughts while you catch the ball. C. keep your hand as motionless as possible as you catch the ball. D. let the ball bounce off your hand as you catch it. E. move your hand away from the ball as you catch it. 14. Impulse has the same units as A. time. B. force. C. momentum. D. acceleration. E. mass. 15. An impulse of 100 N-s is applied to an object. If this same impulse is delivered over a longer time interval, A. the acceleration involved will be increased. B. the force involved will be decreased. C. the momentum transferred will be decreased. the momentum transferred will be increased. E. the force involved will be increased. 16. An impulse of 100 N-s is applied to an object. If this same impulse is delivered over a shorter time interval, A. the acceleration involved will be decreased. B. the force involved will be increased. C. the momentum transferred will be increased. D. the momentum transferred will be decreased. E. the force involved will be decreased. 17. Whether you slam on the brakes or apply a steady, moderate pressure to the brake pedal, the required to bring your car to a stop will be the same. A. time. B. impulse. C. distance. D. force. acceleration. 18 is equal to the change in momentum of the object on which it acts. A. Mass B. Velocity C. Acceleration D. Impulse E. Force 19. When a bullet is fired from a rifle, A. the rifle exerts a lesser impulse on the bullet than the bullet exerts on the rifle. B. the rifle exerts a lesser force on the bullet than the bullet exerts on the rifle. C. the rifle and the bullet exert impulses of equal magnitude on each other. D. the rifle exerts a greater force on the bullet than the bullet exerts on the rifle. E. the rifle exerts a greater impulse on the bullet than the bullet exerts on the rifle.26. Momentum is the product of A. force and velocity. B. force and inertia. C. velocity and acceleration. D. mass and velocity. E. mass and acceleration. 27. If two speeding trucks have the same momentum, . they must have the same velocity. B. the more massive truck must have a greater speed. C. they must have the same acceleration. D. they must have the same mass. E. the more massive truck must have a lower speed. 28. When a bullet is fired from a rifle, A. the momentum of the bullet is zero. B. the momentum of the rifle is equal and opposite to the momentum of the bullet. C. the momentum of the bullet is greater than the momentum of the rifle. D. the momentum of the rifle is zero. E. the momentum of the rifle is greater than the momentum of the bullet. 29. When a bullet is fired from a rifle, A. the velocity of the rifle is zero. B. the velocity of the rifle is greater than the velocity of the bullet. C. the velocity of the bullet is zero. the velocity of the rifle is equal and opposite to the velocity of the bullet. E. the velocity of the bullet is greater than the velocity of the rifle. 30. If two speeding trucks have the same momentum, A. the less massive truck must have a lower speed. B. the less massive truck must have a greater speed. C. they must have the same mass. D. they must have the same acceleration. E. they must have the same velocity. 31. When a bullet is fired from a rifle, the rifle and the bullet have A. the same momentum, but the bullet has a greater inertia. B. the same inertia and the same momentum. C. the same inertia, but the rifle has a greater momentum. D. the same inertia, but the bullet has a greater momentum. E. the same momentum, but the rifle has a greater inertia. 32. The product of mass and velocity is called A. kinetic energy B. force C. impulse D. momentum E. collision33. If a moving object doubles its speed, how much momentum will it have? A. the same amount as before B. four times as much as before C. twice as much as before D. one half as much as before E. six times as much as before 34. If a moving object triples its speed, how much momentum will it have? A. six times as much as before B. one third as much as before C. the same amount as before D. nine times as much as before E. three times as much as before 35. If a moving object cuts its speed in half, how much momentum will it have? A. four times as much as before B. one fourth as much as before C. the same amount as before D. one half as much as before E. twice as much as before 36. A 1-kg ball moving horizontally to the right at 3 m/s strikes a wall and rebounds, moving horizontally to the left at the same speed. What is the magnitude of the change in momentum of the ball? A. 4 kg-m/s B. 6 kg-m/s C. 0 kg-m/s D. 2 kg-m/s E. 3 kg-m/s 37. A 2-kg ball moving horizontally to the right at 3 m/s strikes a wall and rebounds, moving horizontally to the left at the same speed. What is the magnitude of the change in momentum of the ball? A. 12 kg-m/s B. 0 kg-m/s C. 4 kg-m/s D. 6 kg-m/s F 18 kg-m/s 38. A mass of 12 kg moving to the right with a speed of 4 m/s would have a momentum of ___kg-m/s. A. 8 B. 16 C. 1/3 D. 48 E. 3 39. A mass of 2 kg moving to the right with a speed of 6 m/'s would have a momentum of __kg-m/s. A. 4 B. 12 C. 1/3 D. 8 w O40. A mass of 2 kg moving to the right with a momentum of 6 kg-m/s would have a speed of ___ m/s. 4 B. 1/3 C. 12 D. 3 E. 41. A mass of 3 kg moving to the right with a momentum of 12 kg-m/'s would have a speed of _ m/s. A. 36 B. 15 C. D. 9 E. 1/4 42. A mass of 2 kg moving to the right with a momentum of 8 kg-m/s would have a speed of ___ m/s. A. 10 B. 4 C. 16 D. 2 E. 43. A mass of 4 kg moving to the right with a momentum of 12 kg-m/s would have a speed of - m/s. A. 12 B. 4 48 D. 8 E. 3 44. Which of these is the most accurate statement about kinetic energy in a collision between two objects? A. Kinetic energy is only conserved if the colliding objects stick together. B. Kinetic energy is only conserved if the colision is inelastic. C. Kinetic energy is only conserved if the collision is elastic. D. Kinetic energy is always conserved. E. Kinetic energy is never conserved. 45. Which of these is the most accurate statement about kinetic energy in a collision between two objects? A. Kinetic energy is only conserved if the collision is inelastic. B. Kinetic energy is always conserved. C. Kinetic energy is never conserved. D. Kinetic energy is only conserved if the colliding objects bounce apart. E. Kinetic energy is only conserved if the colliding objects stick together. 46. If a collision between two bodies is elastic, A. the total momentum will be unchanged, but the total kinetic energy will be reduced. B. the total kinetic energy will be unchanged, but the total momentum will be reduced. C. both the total momentum and the total kinetic energy will be unchanged. D. each body will retain its original momentum after the collision. E. each body will retain its original kinetic energy after the collision.47. Potential energy is the energy possessed by an object due to its A. acceleration. B. momentum. C. velocity. D. shape. E. position. 48. Gravitational potential energy is the product of A. mass and acceleration. B. power and time. C. weight and height. D. force and distance. E. momentum and impulse. 49. The formula for kinetic energy is KE - A. my B. (1/2) mv C. D. Fd E. mgh 50. The formula for gravitational potential energy is PE - A. mgh B. ma C. mv D. (1/2) mv E. Fd 51. Which of the following is true? A. A body with zero velocity cannot have any potential energy. B. A body with zero acceleration cannot have any kinetic energy. C. A body with zero potential energy cannot have any velocity. D. A body with zero acceleration cannot have any potential energy. E. A body with zero velocity cannot have any kinetic energy. 52. The unit of energy is the joule, which is equal to a A. kg-m. B. kg/s. C. N/s. D. N-m/s. E. N-m. 53. The kinetic energy of a body depends on its A. mass and volume. B. shape and acceleration. C. shape and speed. D. acceleration and volume. E. mass and speed.54. The gravitational potential energy of a body depends on its A. speed and position. B. mass and volume. C. weight and position. D. speed and mass. E. weight and volume. 55. A skydiver weighing 500 newtons jumps from an airplane at a height of 2000 meters. If there is no air resistance, the skydiver's kinetic energy will equal his potential energy relative to the ground when he is at a height of _ meters. A. 1000 B. 500 C. 1 D. 2000 1500 56. A skydiver weighing 500 newtons jumps from an airplane at a height of 2000 meters. At the start of the jump, the skydiver's kinetic energy is _ -_ joules. A. 1500 B. 2500 C. 0 D. 100,000 E. 1,000,000 57. If a moving object doubles its speed, how much kinetic energy will it have? one half as much as before B. the same amount as before C. four times as much as before D. twice as much as before E. six times as much as before 58. If a moving object triples its speed, how much kinetic energy will it have? A. six times as much as before B. three times as much as before C. the same amount as before D. one third as much as before E. nine times as much as before 59. If a moving object cuts its speed in half, how much kinetic energy will it have? A. the same amount as before B. twice as much as before C. one fourth as much as before D. four times as much as before E. one half as much as before 60. A car traveling 90 km/hr has _ _ times the kinetic energy of the same car traveling 30 km/hr. A. 30 B. 3 C. 9 D. 15 m 6- 61. A car traveling 80 km/hr has _ times the kinetic energy of the same car traveling 20 km/hr. A. 2 B. 16 C. D. E. 8 62. A skydiver weighing 500 newtons jumps from an airplane at a height of 2000 meters. At the start of the jump, the skydiver's potential energy is ____ joules relative to the ground. A. 100,000 B. 4 C. 2500 D. 1.000,000 E. 1500 63. A swinging pendulum has at the bottom (middle) of its are. A. maximum total energy B. maximum potential energy C. minimum kinetic energy D. minimum potential energy E. minimum total energy 64. A swinging pendulum at the bottom (middle) of its arc. A. maximum potential energy B. maximum total energy C. minimum total energy D. minimum kinetic energy E. maximum kinetic energy 65. A swinging pendulum has . at the top (end) of its arc. A. maximum kinetic energy B. minimum kinetic energy C. minimum total energy D. maximum total energy E. minimum potential energy 66. A swinging pendulum has at the top (end) of its are. A. maximum potential energy B. minimum total energy C. minimum potential energy D. maximum kinetic energy E. maximum total energy 67. If a swinging pendulum has 4 joules of kinetic energy at the bottom (middle) of its are, its potential energy at the top (end) of its arc will be _ its potential energy at the bottom (middle) of the arc. A. 4 joules more than B. the same as C. 2 joules more than D. 2 joules less than E. 4 joules less than88. Work is equal to the product of A. velocity and time B. mass and velocity. C. mass and acceleration. D. force and time. E. force and distance. 89. is the rate at which work is done. A. Kinetic energy B. Impulse C. Power D. Potential energy E. Momentum 90. When you run up two flights of stairs instead of walking up them, you feel more tired because A. your power output is greater when you run than when you walk. B. a running person has more inertia than a walking person. C. you do more work when you run than when you walk. D. the gravitational force is greater on a running person than on a walking person. E. the gravitational acceleration is greater on a running person than on a walking person. 91. The work required to move a bowling ball from the sidewalk to the top of a tall building is A. equal to the weight of the ball times the height of the building. B. equal to the mass of the ball times the acceleration of gravity. C. equal to the mass of the ball times the speed at which it is moved to the top of the building. D. equal to the impulse applied to the ball. E. equal to the mass of the ball times the height of the building. 92. is the rate at which _ is done. A. Friction; power B. Inertia; acceleration Work; power D. Energy; work E. Power; work 93. The work done against gravity in moving a box with a mass of 3 kilograms through a horizontal distance of 5 meters is A. 15 joules. B. 15 newtons. C. 150 joules. D. 0 joules. E. 150 newtons. 94. The work done against gravity in moving a box with a mass of 20 kilograms through a horizontal distance of 5 meters is A. 1000 newtons. B. 100 joules. C. 0 joules. D. 100 newtons. E. 1000 joules.95. Max pushed on a heavy crate (mass - 250 kg) for 5 seconds with a force of 200 newtons, but the crate did not move at all. How much work did Max do on the crate? A. 250,000 J B. none C. 1000 J D. 1250 J E. 200 J 96. The work done against gravity in moving a box with a mass of 20 kilograms through a height of 5 meters is A. 100 newtons. B. 1000 joules. C. 4 joules. D. 1000 newtons. E. 100 joules. 97. The work done against gravity in moving a box with a weight of 20 newtons through a height of 5 meters is A. 100 newtons B. 100 joules. C. 1000 joules. D. 4 joules. E. 1000 newtons. 98. The work done against gravity in moving a box with a weight of 5 newtons through a height of 3 meters is A. 5/3 joules. B. 15 joules. C. 15 newtons. D. 150 joules. E. 150 newtons. 99. The work done against gravity in moving a box with a mass of 3 kilograms through a height of 5 meters is A. 15 joules. B. 0.6 joules. C. 150 newtons. D. 150 joules. E. 15 newtons. 100. The work done against gravity in moving a box with a mass of 5 kilograms through a height of 3 meters is A. 15 newtons. B. 150 joules. C. 150 newtons. 5/3 joules. E. 15 joules. 101. The work done against gravity in moving a box with a weight of 3 newtons through a height of 5 meters is 15 joules. B. 15 newtons. C. 150 joules. D. 0.6 joules. E. 150 newtons.117. When a car rounds a curve to the right at high speed, the passengers experience the illusion of being acted upon by A. a centrifugal force directed to the right. B. a centrifugal force directed to the left. C. an upward-directed centrifugal force. D. an upward-directed centripetal force. E. a centripetal force directed to the left. 118. A centripetal force is one that is A. against the direction of motion of an object. B. directed toward the center of the Earth. C. directed toward the center of curvature of the path of a moving object. D. directed away from the center of curvature of the path of a moving object. E. in the direction of motion of an object. 119. When you whirl a rock tied to a string in a horizontal circle around your head, A. the rock exerts a centripetal force on the string. B. the string exerts a centripetal force on the rock. C. the Earth exerts a centripetal force on the rock. D. the string exerts a centripetal force on your hand. E. there are no centripetal forces involved. 120. When a car rounds a curve at high speed, A. the road exerts a centripetal force on the tires. B. the car body exerts a centripetal force on the tires. C. there are no centripetal forces involved. D. the car exerts a centripetal force on the road. E. the tires exert a centripetal force on the road. 121. When a car rounds a curve at high speed, A. there are no centripetal forces involved. B. the car exerts a centripetal force on the road. C. the tires exert a centripetal force on the road. D. the car exerts a centripetal force on the driver. E. the car body exerts a centripetal force on the tires. 122. As you whirl a rock tied to a string in a horizontal circle around your head, the string suddenly breaks; what happens? A. The rock will move inward and strike you on the head. B. The rock will move along a straight line tangent to the circle while curving toward the ground. C. The rock will move outward directly away from your head while curving toward the ground. D. The rock will continue to move in a circle about your head. E. The rock will fall straight to the ground._149. When air is removed from a metal can by a vacuum pump, the can buckles inwards and is crushed. This occurs because A. the air pressure on the outside of the can is greater than the air pressure on the inside of the can. B. the loss of air molecules from inside the can weakens the metal. C. the air pressure on the inside of the can is greater than the air pressure on the outside of the can. D. of Bernoulli's principle. E. the opposite sides of the empty can strongly attract each other. _150. A barometer made with mercury will be about 30 inches high while a barometer made with water will be about 34 feet high. This is because mercury and water have different A. accelerations. B. densities. C. volumes. D. colors. E. potential energies. _151. The air pressure at the top of a mountain is _ the air pressure at sea level because A. greater than; the air on the mountain top can press from all sides, rather than just from above. B. equal to; the air is in contact with the earth in both locations C. greater than; the air has more potential energy at the top of the mountain D. less than gravity is not as strong at the top of the mountain E. less than; there is less air above the mountain top _152. Bernoulli's principle says that when the speed of a fluid increases, A. pressure in the fluid decreases. B. the fluid does more work. C. gravitational potential energy of the fluid increases. D. pressure in the fluid increases. E. kinetic energy of the fluid decreases. 153. Bernoulli's principle explains why A. a hot air balloon rises. B. dead fish float. C. liquid rises in a drinking straw. D. submarines can remain submerged. E. airplanes fly. 154. An airplane wing is shaped such that A. air flows more rapidly across the bottom than over the top of the wing. B. air flows more rapidly over the top than across the bottom of the wing. C. air does not flow over the top of the wing. D. air flows at the same rate across the bottom and over the top of the wing. E. air does not flow across the bottom of the wing. 23_162. According to Boyle's Law, if the volume occupied by a certain gas is doubled, A. the number of atoms in the gas will be halved. B. the pressure of the gas will remain constant. C. the pressure of the gas will be doubled. D. the pressure of the gas will be quadrupled. E. the pressure of the gas will be halved. _163. According to Boyle's Law, if the volume occupied by a certain gas is halved, A. the pressure of the gas will be halved. B. the number of atoms in the gas will be doubled. C. the pressure of the gas will be quadrupled. D. the pressure of the gas will be doubled. E. the pressure of the gas will remain constant. _164. When a fixed amount of air is compressed, at constant temperature, to half its original volume, A. the pressure of the air will be twice as much as before. B. the density of the air will be one half as much as before. C. the pressure of the air will be four times as much as before. D. the pressure of the air will be one half as much as before. E. the density of the air will be one fourth as much as before. 165. When a fixed amount of air is compressed, at constant temperature, to one fourth its original volume, A. the pressure of the air will be twice as much as before. B. the pressure of the air will be one fourth as much as before. C. the density of the air will be one half as much as before. D. the density of the air will be one fourth as much as before. E. the pressure of the air will be four times as much as before. 166. When a fixed amount of air is compressed, at constant temperature, to one third its original volume, A. the pressure of the air will be three times as much as before. B. the pressure of the air will be nine times as much as before. C. the density of the air will be one third as much as before. D. the pressure of the air will be one third as much as before. E. the density of the air will be nine times as much as before. 167. Archimedes' Principle states that an object surrounded by air is buoyed up by a force equal to the A. weight of the air it displaces. B. weight of Archimedes. C. total pressure on the object. D. difference between the weight of the object and the weight of the air it displaces. E. weight of the object.168. A balloon will cease rising in air only when A. the buoyant force on the balloon equals the weight of the balloon. B. the buoyant force on the balloon is zero. C. the weight of the balloon is zero. D. the air pressure is zero. E. the balloon reaches the very top of the atmosphere. _169. Two helium-filled balloons have the same mass but one is larger than the other. Which will rise more rapidly in air? A. The larger one, because it has a greater buoyant force. B. They will rise at the same rate because they both contain helium. C. The smaller one, because it has a greater buoyant force. D. The smaller one, because it has a higher density. E. The larger one, because it has a higher density. _170. Two lighter-than-air helium-filled containers have the same fixed volume but one holds twice as many helium atoms as the other. Which will rise more rapidly in air? A. The one with more helium, because it has a higher density. B. The one with less helium, because it has a greater buoyant force. C. The one with more helium, because it has a greater buoyant force. D. The one with less helium, because it has a lower weight. E. They will rise at the same rate because they both contain helium. 171. Humans generally do not rise into the air like helium-filled balloons because A. our bodies contain bones. B. our bodies contain no helium. C. our bodies are more dense than air. there is no buoyant force acting on our bodies. E. air pressure pushes us down onto the ground. _172. On which of these would air produce the greatest buoyant force? A. a flying robin B. an elephant C. a cat a perching robin a flying mosquito 173. A helium-filled balloon released at the Earth's surface rises into the air. If an identical helium-filled balloon were released at the surface of the Moon, where there is less gravity and no atmosphere, what would happen to the balloon? A. The balloon would rise from the Moon's surface, but at a slower rate than it did on Earth. B. The balloon would rise from the Moon's surface, but at a faster rate than it did on Earth. C. The balloon would rise from the Moon's surface at the same rate as it did on Earth. D. The balloon would fall to the Moon's surface. E . The balloon would hover above the Moon's surface