A car crashes against a wall. The initial velocity at collision is 15 m/sec and the velocity after collision is 2.6 m/sec in the opposite direction. The mass of the car is 1500 kg. What is the average force exerted on the automobile bumper if collision lasts for 0.15 seconds.

A car crashes against a wall. The initial velocity at collision is 15

1.	A car crashes against a wall. The initial velocity at collision is 15 m/sec and the velocity after collision is 2.6 m/sec in the opposite direction. The mass of the car is 1500 kg. What is the average force exerted on the automobile bumper if collision lasts for 0.15 seconds.
A.	1.76 × 105 N
B.	2.1 × 105 N
C.	2.76 × 105 N
D.	None of these
Answer» B. 2.1 × 105 N

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A car crashes against a wall. The initial velocity at collision is 15 m/sec and the velocity after collision is 2.6 m/sec in the opposite direction. The mass of the car is 1500 kg. What is the average force exerted on the automobile bumper if collision lasts for 0.15 seconds.

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