One day Timmy was shopping at TraderJoe's. As he gets in line he sees Godzilla near the front of a line. Timmy does not think Godzilla is really in line yet because he is too far away from the cashier, so Timmy gets in line in front of GodzillaTurnsout. Tlmmywas mistaken. (The direction Timmy moves is considered to be positive! The ground is a horizontal surface.) Godzilla puts Timmy on the ground and then kicks him out of the store. How many forces do work on Timmy as he slides on the ground and out of the store? 4 Unable to be determined by the given information 2 A block-spring system oscillating on a frictionless, horizontal surface with an amplitude of 5.0 cm has a total energy of J. The block is then replaced by one having half the mass of the original block and the amplitude of the motion is increased to 10.0 cm. What is the total mechanical energy of the less massive system? still 6 J. 12 J. Unable to bedetermined with the given information. 3 J. 48 J. 24 J, n m. A pendulum with a ball of known mass m and length L swings back and forth. Its direction of motion is considered positive. At its highest point, the centripetal force acting on the ball none of these answers is correct. is zero. is equal to the ball's weight. is less than the balls weight. but not zero. is unable to be determined from the given information. I m The mathematical representation of the oscillation of a piece of cheese attached to a spring is given by 1(3) = 5 cm cos(201rt). e period ofoscillation of the cheese is 20 seconds. 1/5 second. none of these answers is correct. 5 seconds. 10 seconds. 1/10 second. 207T seconds. I n... A pendulum with a ball of known mass m and length L swings back and forth. Its direction of motion is considered positive. As the ball swings down from its highest point to its lowest point, its angular acceleration is zero. is DOsitive. ls negative. none of these answers is correct is equal to the ball's weight. is unable to be determined. I One day at the shooting range, Jlll tries out a new gun 1.250 kg that uses 15.00 g bullets. Each bullet leaves the gun with a speed of 250 m/s. When the gun is ring, the magnitude of the impulse delivered to the gun by the bullet is less than the magnitude of the impulse delivered to the bullet by the gun. none of these answers is correct. is equal and opposite to the magnitude ofthe impulse delivered to the bullet by the gun. is greater than the magnitude ofthe impulse delivered to the bullet by the gun. is zero. is unable to be determined by the given information. Imm A300 kg rock is red at an angle of 60 degrees above the horizontal with an initial speed of 20.00 m/s by someone standing on the edge ofa cliff 25_OO~m above level ground. (The lowest point is taloen to hey a 0. Air resistance Is not neglected in thls situation!) The initial mechanical energy of the rock is none of these answers is correct. 1335 J. 735 J. 294 J. 600 J. 629.4 J. unabie to be determined. I ......- One day at the shooting range. Jlll tries out a new gun 1.250 kg that uses 15.00 g bullets. Each bullet leaves the gun with a speed of 250 m/s. After the gun is fired, the gun and bullet move in opposite directions because of conservation of energy. True False Unable to be determined by the given information I The type of force that causes simple harmonic motion is none of these answers is correct an oscillating force. a Jedi force. a reactive force. a centripetal force. a restoring force. n looinl The equilibrium point on a spring is not always the point where the spring is not stretched or compressed. Unable to tie determined. True False. An astronaut has a weight of 8000 N on the International Space Station (ISS), When she returns to Earth1 her weight is unable to be determined with thegiven information. more than on the ISS. None ofthese answers is correct. the same as on the ISS. less than on the ISS. Ilm A simple harmonic oscillator always exhibits simple harmonic motion. True Unable to be determined with the given information. False .... A390 kg rock is red at an angle of 60 degrees above the horizontal with an initial speed of 40.00 m/s by someone standing on the edge of a cliff 25,00~m above level ground. (The lowest point is taken to bev= 0. Air resistance is not neglected in this situation!) As the rock travels down toward the ground, its mechanical energy is increasing. none of these answers is correct. is decreasing. remains constant. changes in an unknown way. is zero. I 1m- One day Timmy was shopping at Trader Joe's. As he gets in line he sees Godzilla near the front ofa line. Timmy does not think Godzilla is really in line yet because he is too far away from the cashier, so Timmy gets in line in front of Godzil la. Turns out. Timmy was mistaken. (The direction Timmy moves is considered to be positive.' The ground is a horizontal surface.) Godzilla then kicks Timmy out of the store. As Timmy slides across the oor he is accelerating. Unable to be determined with the given information. False Tr Ha I A 3.00 kg rock is red at an angle of 60 degrees above the horizontal with an initial speed of 40.00 mfs by someone standing on the edge ofa cliff 25.0D~m above level ground (The lowest point is taken to he y - D. Air resistance is not neglected in this situation!) When the rock reaches its highest point. its mechanical energy remains constant. is zero. changes in an unknown way. has decreased. none of these answers is correct. has increased