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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.
(c) Find the size of the force that pushed in the front of the car by 50.0 cm.
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