Student's name:
Grade:
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 0.095 kg.
The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it.
Immediately after the bullet exits the block, the speed of the block is 23 m/s. (Round answers to the nearest integers)
Q1: (1 pt) What is the speed of the bullet when it exits the block? (m/s)
Q2: (2 pts)What is the initial kinetic energy of the system (bullet & block)? (J)
What is the final kinetic energy of the system (bullet & block)? (J)
Q3: (1pt) Is the final kinetic energy of this system equal to, less than, or greater than the initial kinetic energy?