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

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

bobpursley · Answer

momentum lost=momentum block gained 10*150=1000V solve for v.

Joe · Answer

1500