Question

A 1000 kg car traveling at 10 m/s hits a wall and comes to a stop...

A 1000 kg car traveling at 10 m/s hits a wall and comes to a stop over a time of 10 ms (milliseconds).

a. What is the acceleration of the car? Frame the answer as a multiple of “g” or 10 m/s/s.

b. What is the average force on the car? Frame the answer as a multiple of “mg” or the weight of the car. A 50 kg passenger in the car with a seatbelt on comes to a stop over a time of 300 ms.

c. What is the acceleration on the passenger? Frame the answer as a multiple of “g” or 10 m/s/s. d. What is the average force on the passenger? Frame the answer as a multiple of “mg” or the weight of the passenger.

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Answer #1

Find the acceleration of the car using equation of kinematics and use that to find the average force as shown below.

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