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a) What is the momentum of a 12000 kg truck whose velocity is 50 m if; b] What velocity must a 6000 kg truck attain in order to have the same momentum? c) What velocity must it attain to have the same kinetic energy? A bullet, having a mass of 0-04 kg moving with a velocity of 450 msenetrates a distance of 0.08 tn into a wooden block rmly attached to the earth. Assuming a constant accelerating force, compute the following: a) the acceleration of the bullet, b) the accelerating force, c) the time of acceleration, and d) the impulse of the collision