1 A police investigator doing some ballistics testing in his laboratory fires a 30-g bullet with...

 

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1 A police investigator doing some ballistics testing in his laboratory fires a 30-g bullet with a velocity of 360 m/s into a lead paper- weight placed against a concrete wall. Because of a constant resistance force, the bullet pene- trates 5.0 cm into the paperweight before coming to a stop. Calculate a) the initial momentum of the bullet before the collision. b) the acceleration of the bullet in the paperweight. c) the average force exerted on the bullet. d) the time required to stop the bullet in the paperweight. 1 A police investigator doing some ballistics testing in his laboratory fires a 30-g bullet with a velocity of 360 m/s into a lead paper- weight placed against a concrete wall. Because of a constant resistance force, the bullet pene- trates 5.0 cm into the paperweight before coming to a stop. Calculate a) the initial momentum of the bullet before the collision. b) the acceleration of the bullet in the paperweight. c) the average force exerted on the bullet. d) the time required to stop the bullet in the paperweight.