College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

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At a shooting competition, a contestant fires and a 12.0-g bullet leaves the rifle with a muzzle speed of 130 m/s. The bullet hits the thick target backing and stops after traveling 4.00 cm. Assuming a uniform acceleration, (a) what is the impulse on the target (b) What is the average force on the target