College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question
a speed of 12.0 m/s. The contact time is 0.100 seconds. after before 12.0 m/s 16.0 m/s (a) Determine the momentum of the basketball before it hits the wall. momentum of the basketball = (b) Determine the momentum of the basketball after it hits the wall. momentum of the basketball = (c) (i) Calculate the impulse with the wall, impulse with the wall = (ii) hence obtain the force of the wall on the ball. force of the wall on the ball = PHY310@HCIS Momentum Page 4 of 6
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Transcribed Image Text:a speed of 12.0 m/s. The contact time is 0.100 seconds. after before 12.0 m/s 16.0 m/s (a) Determine the momentum of the basketball before it hits the wall. momentum of the basketball = (b) Determine the momentum of the basketball after it hits the wall. momentum of the basketball = (c) (i) Calculate the impulse with the wall, impulse with the wall = (ii) hence obtain the force of the wall on the ball. force of the wall on the ball = PHY310@HCIS Momentum Page 4 of 6
Figure below shows a new car. dummy of mass 70 kg used in a crash test to investigate the safety of passenger compartment barrier dummy windscreen The car approaches a solid barrier at 20 m/s. It crashes into the barrier and stops suddenly. (a) (i) Calculate the momentum of the dummy immediately before the crash. momentum = [2] (ii) Determine the impulse that must be applied to the dummy to bring it to rest. impulse = [1] (Ь) In the crash test, the passenger compartment comes to rest in 0.20 s. Calculate the deceleration of the passenger compartment. deceleration = [2] The seat belt and air bag bring the dummy to rest so that it does not hit the windscreen. The dummy has an average deceleration of 80m/s?. (c) Calculate the average resultant force applied to the dummy, of mass 70 kg. force = [2] PHY310@HCIS Momentum Page 5 of 6
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Transcribed Image Text:Figure below shows a new car. dummy of mass 70 kg used in a crash test to investigate the safety of passenger compartment barrier dummy windscreen The car approaches a solid barrier at 20 m/s. It crashes into the barrier and stops suddenly. (a) (i) Calculate the momentum of the dummy immediately before the crash. momentum = [2] (ii) Determine the impulse that must be applied to the dummy to bring it to rest. impulse = [1] (Ь) In the crash test, the passenger compartment comes to rest in 0.20 s. Calculate the deceleration of the passenger compartment. deceleration = [2] The seat belt and air bag bring the dummy to rest so that it does not hit the windscreen. The dummy has an average deceleration of 80m/s?. (c) Calculate the average resultant force applied to the dummy, of mass 70 kg. force = [2] PHY310@HCIS Momentum Page 5 of 6
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