Please help me with this physics problem! Please answer with work, thank you!

HW O. MODICILL A Bullet Passing Through a Block of Wood A 10 g bullet is fired through a 1 kg block of wood that was sitting on a wood floor. The bullet enters the wood block with a speed of 500 m/s and exits with a speed of 50 m/s. A) If the bullet takes 0.005 s to pass through the block of wood, what is the magnitude of the average force that the block of wood exerts on the bullet? B) How fast is the block of wood moving when the bullet exits it? You may disregard friction for this part of the problem if you state your reason for doing so. MK = 0.2 for wood on wood