Problem 32P

IP 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. (a) What is the speed of the bullet when it exits the block? (b) Is the final kinetic energy of this system equal to, less than, or greater than the initial kinetic energy? Explain. (c) Verify your answer to part (b) by calculating the initial and final kinetic energies of the system.

Solution 32P

Step 1 of 4:

In this question, we need to find the speed of the bullet when it exits the block

In part b, we need to check if the final kinetic energy of system equal to or less than or greater than initial kinetic energy

In part c, we need to need to verify the answer to part (b) by finding the initial and final kinetic energy of the system

Data given

Mass of bullet

Speed of bullet

Mass of the block

Speed of the block after being fired

Part a: