-An 8 g bullet is shot into a 4.0 kg block,at rest on a frictionless horizontal surface.The bullet remains lodged in the block.The block moves into a spring and compresses it by 3.7 cm.The force constant of the spring is 2500 N/m.In the figure,the initial velocity of the bullet is closest to:

Question

Quizplus · Accepted Answer

The correct answer is A because the momentum of the bullet-block system is conserved, and the kinetic energy of the system is converted to elastic potential energy in the spring.

-An 8 G Bullet Is Shot into a 4