In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1

Question

In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed. What is the speed of the block just after the bullet emerges? 3.00 m/s 2.97 m/s 273 m/s 1.50 m/s In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed. What is the speed of the block just after the bullet emerges? In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed. What is the speed of the block just after the bullet emerges? 3.00 m/s 2.97 m/s 273 m/s 1.50 m/s 3.00 m/s 2.97 m/s 273 m/s 1.50 m/s

Explanation / Answer

m(u-v) = Mv

v = 0.01*150/1 = 1.5 m/s

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