A 1200 kg car is traveling at 3.0 m/s and strikes a wall. The car bounces off the wall with a velocity of 4.0 m/s in the opposite direction. If the car is in contact with the wall for 0.10 seconds, then the magnitude of the average force of the wall on the car is
A) 46,000 N.
B) 55,000 N.
C) 63,000 N.
D) 75,000 N.
E) 84,000 N.
Correct Answer:
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