b)Two students are watching an action film in which a car drives down a ramp onto the back of amoving lory. Both are moving at high speed, the car slightly faster than the lorry.One student complains that this is impossible because the car would not be able to stop beforehitting the cab of the lorry.The car has mass 1250 kg and is moving at a speed of 28.0 m s¯ª. The lorry has mass 3500 kgand a speed of 25.5 m sª. The length of the flat back of the lorry allows a braking distance of5.0 m.By considering both momentum and energy show that the stunt is possible, provided aminimum force of about 600 N slows the car down. You should support your explanations withcalculations.Treat the situation as one in which two objects join together.

Name: b)Two students are watching an action film in which a car drives down
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Two students are watching an action film in which a car drives down a ramp onto the back of a moving lorry. Both are moving at high speed, the car slightly faster than the lory. One student complains that this is impossible because the car would not be able to stop before hitting the cab of the lorry. The car has mass 1250 kg and is moving at a speed of 28.0 ms. The lorry has mass 3500 kg and a speed of 25.5 m s¯ª. The length of the flat back of the lorry allows a braking distance of 5.0 m. By considering both momentum and energy show that the stunt is possible, provided a minimum force of about 600 N slows the car down. You should support your explanations with calculations. Treat the situation as one in which two obiects join together.

Two students are watching an action film in which a car drives down a ramp onto the back of a moving lorry. Both are moving at high speed, the car slightly faster than the lory. One student complains that this is impossible because the car would not be able to stop before hitting the cab of the lorry. The car has mass 1250 kg and is moving at a speed of 28.0 ms. The lorry has mass 3500 kg and a speed of 25.5 m s¯ª. The length of the flat back of the lorry allows a braking distance of 5.0 m. By considering both momentum and energy show that the stunt is possible, provided a minimum force of about 600 N slows the car down. You should support your explanations with calculations. Treat the situation as one in which two obiects join together.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 84PQ

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