bullet of mass 0.01 kg is moving hotizontally with a speed of 100 m/s when it hits a block of mass 2 kg that is at rest on a horizontal surface with a coefficient of friction of 0.4. After the collision the bullet becomes embedded in the block. a) find the maximum traveled distance of the bullet-block after the collision? b) find the kinetic energy of the bullet-block system after the collision.

Question

bullet of mass 0.01 kg is moving hotizontally with a speed of 100 m/s when it hits a block of mass 2 kg that is at rest on a horizontal surface with a coefficient of friction of 0.4. After the collision the bullet becomes embedded in the block.   a) find the maximum traveled distance of the bullet-block after the collision? b) find the kinetic energy of the bullet-block system after the collision.

akashdeepdeb · Answer

Use 
Law of conservation of momentum.
Work energy theorem.
Newton's laws.

anonymous · Answer

which Newton's law do I use the first or the second?