A 5.00−g bullet moving with an initial speed of vi=400 m/s is fired into and passes through a 1.00−kg block as shown in the figure.
The block, initially at rest on a frictionless, horizontal surface, is connected to a spring with force constant 900 N/m. The block moves d = 5.00 cm to the right after impact before being brought to rest by the spring. Find the speed at which the bullet emerges from the block.
