A 1.85 103 kg car, m, has a speed, vi, of 10.5 m/s. The car then hits a tree. The tree doesn't move, and the car comes to rest, as shown in Figure 11-19. Assume that air resistance is negligible.
(a) Find the change in kinetic energy of the car.
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(b) Find the amount of work done as the front of the car, crashes into the tree.
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(c) Find the size of the force that pushed in the front of the car by 50.0 cm.
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