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Use the worked example above to help you solve this problem. In a crash test, a...

Use the worked example above to help you solve this problem. In a crash test, a car of mass 1.44 103 kg collides with a wall and rebounds as shown in the figure. The initial and final velocities of the car are vi = -15.2 m/s and vf = 2.11 m/s, respectively. If the collision lasts for 0.153 s, find the following. (a) the impulse delivered to the car due to the collision kg · m/s (b) the size of and direction of the average force exerted on the car (Indicate the direction with the sign of your answer.) N

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Answer #1

(a) The impulse delivered to the car due to the collision.

Impulse = Change in momentum

ANSWER:

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(b) The size of and direction of the average force exerted on the car (Indicate the direction with the sign of your answer.) N

Impulse = Average force * time

Direction is same as direction of final velocity

ANSWER:

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