Help me answer the following

General Directions: Read and analyze the following questions. 1. What is the shape of the trajectory of a projectile? A. Circular C. Hyperbolic B. Elliptical D. Parabolic 2. What is referred to as an object that is given an initial velocity and is then acted solely upon by gravitational force? A. Trajectory B. Projectile C. Force of gravity D. Acceleration due to gravity 3. Suppose a ping pong ball is tossed. When the ball reaches, the highest point, which statement about the ball's velocity and acceleration is TRUE? A. both its velocity and acceleration are zero B. its velocity is zero while acceleration is not zero C. its velocity is not zero while acceleration is zero D. neither its velocity nor its acceleration is zero 4. What happens to the vertical velocity of an object as it travels through the air? A. Changes continuously . C. Gradually increasing B. Gradually decreasing D. Remains the same For #5 and #6, refer to the statement below The identical balls are released from the same height with equal speeds. Ball A is thrown vertically down. Ball B is thrown horizontally, and Ball C is thrown at an angle (neither 0 nor 90) with the horizontal. Another identical Ball D is dropped from rest also from the same height. 5. Which among the four balls will reach the ground first? A. Ball A B. Ball B C. Ball C D. Ball D 6. Which two balls will reach the ground at the same time? A. Ball A and B C. Ball B and D B. Ball A and D D. Ball C and A 7. Which of the following diagram best shows the trajectory of a projectile launched at angle 80 at the horizon with an initial velocity equal to 35m/s. A. C. x= 43m X = 125m B. X= 25m x = 200m 8. What happens to the horizontal velocity of an object as it travels through the air? A. Changes continuously C. Gradually increasing B. Gradually decreasing D. Remains the same 9. If you throw a baseball straight up, what is its vertical velocity at the highest point A.Om/s C.0m/s2 B.9.8m/s D.-9.8 m/s2 10. Projectile motion may be described using descriptions of horizontal and vertical motion. Which of the following statements are TRUE? I. A trajectory is a path followed by a projectile. Il. The path of an object under projectile motion follows a parabola.Ill. Because of gravity on earth and horizontal velocity, an object travels in a parabolic arc. V. The gravitational acceleration of projectiles on earth is constant and is equal to -9.8 ms2/(means -9.8 ms2/ downward). B. I and ill C. I, II and IV D. I, II, HI, and IV- A. I and II 11. At what axis in the cartesian coordinate system is horizontal motion usually associated? A. x-axis B. y-axis C. z-axis D. time frame 12. What is the acceleration of a freely falling object on earth? A. 9.8 m/s2 B. -7 m/s2 C. 6.4 m/s2 D. Cannot be determined 1.3. Which of the following statements BEST shows horizontal motion? A. A bird catching its prey C. A cheetah leaping to catch a prey B. Skateboarding in a U ramp D. Running in a 100-yard dash 14. Vertical motion is a type of notion that is affected by gravity. Which of the following satisfies an object moving in vertical motion? A. Book on top of a table C. Ball on the fifth floor of a building B. Chandelier suspended in a ceiling D. Fruit falling from a tree Study the prob.'em below, for # 15 - 17 A projectile was launched 10m above the ground at 25' with an initial velocity of .15m/s. 15. On the given problem above, how far is the range of the projectile? A. 44.06.n B. 10.60m C. 79.15m D. 100.1m 16. What is the highest point of the projectile A. 2.05m B. 12.9.5m C. 10'm L. 15m-...- 17. How long will it take for the projectile to reach the ground A. 1.5s B. 2.2s C. 3.14.s D. 4.'S 18. Compute for the maximum height reached of a projectile launched at an angle 450 on the ground with a velocity of 25m/." A. 26m B. . 16m C. 10m D. 5m 19. A ball hits at an angle 31". At what point in its trajectory does the projectile have the least speed? A. just after it was launched B. at the highest point in its flight C. just before it hits the ground D. halfway between the ground and . 'he highest point 20. A ball is hit at an angle 30 and it reaches 50m. Given the same initial velocity at wh, at c'ther angle should a ball be hit to reach the same dis. tance? A. 150 B. 45 C . 60 D. 70 21. A stone is just released from the window of a train moving along a horizontal straight trac . The stone will hit the ground following: A. Hyperbolic path C. Circular path B. Straight path D. Para bolic path 22. At what angle should a water hose be aimed in or 'der for the water to land with the greatest horizontal range? A. 0 B. 30' C. 45 D. 60' 23. A bullet is dropped from the san.'e height when another bullet is fired horizontally. How will the two bullets reach the ground? A. Simultaneously C. One after the other B. Depends on the observer D. None of the above 24. A particle moves in a plane with constan.'t acceleration in a direction from the initial velocity. The path of the particle will be _ A. a parabola C. straight line B. an ellipse D. ar, ' arc of a circle 25. A cannon from the ground aimed at 45" and fired its projectile with an initial velocity of 50m/s. How far will the projectile reach? A. 300m B. 255m C. 355m D. 200m 26. From Question #25. Determine the maximum height of the projectile. A. 40.51m B. 63.76m1 C. 100.41m. D. 1.56m 27. A projectile is launched at an arigle of 300 above the horizontal. Neglecting air resistance, what are the projectile's horizontal and vertical accelerations when it reaches its maximum height? A. Both the horizontal and vertical accelerations are zero. B. The horizontal acceleration is zero and the vertical acceleration is -9.81 m/s2.C. The horizontal acceleration is 9.81 m/s2 and the vertical acceleration is zero. D. Both the horizontal and vertical accelerations are 9.81 m/$2. 28. A ball is thrown at angle of 380 with respect to the horizontal. What happens to the magnitude of the ball's vertical velocity during the time interval that the ball is in the air? A. it decreases, then increases. C . It increases, then decreases. 3. It decreases, then remains the same. D. It remains the same. 29. A baseball player throws a ball horizontally (at an angle of 0). Which statement best describes the ball's motion after it is thrown? (Neglect air resistance) A. Its vertical' speed remains the same, and its horizontal speed remains the same. B. Its vertical speed increases, and its horizontal speed increases. C. Its vertical speed increases, and its horizontal speed remains the same. D. Its vertical speed increases and its horizontal speed decreases 3:9. A stand holds two white balls, A and B. At the same instant, ball A is dropped straight down, and ball B is shot straight out. Which ball will hit the ground first? (Neglect Air resistance) A. Bali' A B. Ball B C. Both bah's will not reach the ground. D. Both balls v.vill reach the ground at the same time. 31. The soccer p.'ayer kicks the ball with an initial velocity of 35 m/s at an angle of 20. Given the initial velocity is not char. ged, which of the following statements are TRUE? Maximum range is at tained at an angle of 45 degrees with respect to the horizontal. The maximum height reached by a projectile decrease as the angle of launch decreases from 90 degrees. The maximum height rea. ched by a projectile increase as the angle of launch increases until an angle of 90 degrees with respect to the horizontal. Range of projectile will increase as the angle increases; the height decreases as the angle of the projectile will increase and the horizontal velocity always cha nges with respect to time. I and li B. I only C. I, II and ill D. IV only 32. Momentum is directly proportional to the product of? A. mass and velocity C. acceleration and n. 'ass B. velocity and force D. force and time 33. What is impulse? A. the change in volume of an object. C. the original momentum of the object. B. the change in momentum of an object D. a force applied to an object for & period. 34. Which of the following is necess ary condition for the total momentum . of a system to be conserved? A. the system must be at rest C. no net external force acts on . the system B. kinetic energy must not change D. only the force of gravity acts on the system 35. Along the De Venecia road, a tricycle traveling at 20m/s with a mass of 250kg collided with a van travelling at 100m/s having a mass of 2500kg. Between the two vehicles, which wit." have , "reater damage? A. the van C. there will be no damage on the two vel licles B. the tricycle D. the two vehicles will have the same dan lage 36. In certain martial arts, people practice breaking piece of wood with the side of their kare hand. Use your understanding of impulse to explain how this can be done without injury to the hana A. Given the same change in momentum, when the time interval is smaller, the impact force is bigger. B. Given the same change in momentum, when the time in terval is bigger, the impact force 's bigger. C. Given the same change in momentum, when the time interval is smaller, the impact force i's smaller. D. Given the same change is momentum when the time interval is bigger, the impact force is smaller 37. A mini dump truck full of abaca fiber collides with a motorcycle or habal-habal. The velocity of the truck and the motorcycle is the same. Which has a greater impulse? Why? A. The mini dump truck because it has larger change in momentum. B. The mini dump truck because it is full of abaca fiber. C. The motorcycle because it has larger change in momentum. D. The motorcycle because it has les ser mass. 38. Two billiard balls approach each other at equal speed. If they collide in a perfectly elastic collision, what would be their velocities after calli. tion? A. zero C. same in magnitude but opposite in direction B. same in magnitude and direction D. different in magnituc'e and opposite in direction 39. Two marbles of equal mass are rolling towards each other. One is rolling at ," m/sec and the other at 10 m/sec. The one rolling faster has a_ n. omentum and .. impulse. It will surely knock the other one backwards. A. lesser, lesser C. greater, lesserD. greater, greater B. lesser, greater 10. When two objects collided their impulse and momentum changes. Which statements below will have realistic outcome on collisions? When Car A running at 50m/s with a mass of 550kg collided with a bigger Car B with a mass of 450kg running at 35m/s 1. both cars will move away from on another after collision 11. The two cars will stick together after collision but on a rare case III. Car A only having less momentum will only move away from Car B A. I, ll and Ill C. I only B. II only D. I and Ill 41. An empty cargo truck is running at 15m/s and has a mass of 350-kg. It collides with and sticks to another 250-kg truck which was stationary before the collision. Which of the following statements are TRUE based on the scenario?' 1. the total momentum off the objects is conserved 11. the collision is said to be perfectly inelastic the direction of objects after collision depends on the truck that has more mass and velocity A. I only C. I, II and Ill B. II and III D. I and III 42. What type of quantity are momentun. and velocity? A. directo." C. scalar B. reactor D. vector 43. What is the impulse of an object moving with constant momentum? A. 0 C. the same with momentum B. 1 D. none of these 44. Two billiard balls .approach each other at equal speed. If they collide in a perfectly elastic collision, what would be their ve. ocities after collision? A. zero C. same in magnitude but opposite in direction B. same in magnitude and a'irection D. different in magnitude and opposite in direction 45. Two objects stuck together after collision. They have the same velocity after collision. The combined objects move at 0.45m/s after collision. Which of the following illustrations explains the perfect inelastic collision? snore enfusion. comision For # 46 - 48. Two 0.5 kg balls approach each c'ther with the same speed . of 2.0 m/s. 46. What is the total momentum of the system .before collision? A. 0 C. 1.0 kg m/s B.0.50 kg m/s D.-1.0 kg m/s 47. If there is no external force acting on the system, what is the total moment Im of the system after collision? A. 0 C 1.0 kg m/s B. 0.50 kg m/s D. -1.0 kg m/s 48. The total momentum of two objects before collision is 175 kg. m/s. What will be their total momentum after collision? A.50 kg m/s C. 17'5 kg m/s B. 350 kg m/s D. 5 kim/s 49. A moderate force will break an egg, however, an egg dropped on the road usually breaks, while one dropped on the grass doesn't break. This is because for the egg dropped on the grass. A. The time interval for stopping is greater C. The change in momentum is greater B. The time interval for stopping is lesser D. The change in momentum is less 50. In all collisions, momentum is conserved. Which of the following statements is/are NOT TRUE? 1. The system must be isolated Il. There is no external for is applied Ill. The fictional force must be considered Total momentum of the objects before the collision is equal to the total momentum of the objects after the collision. A. I, II and IV B. I and II only C. Ill only D. ' only