Solve the all parts of given question:

Question: A bullet of mass m = 13 g and velocity 270 m/s is shot into a block of wood that is firmly attached to the ground. The bullet comes to rest in the wood at a depth of 8.0 cm.

Part A: What was the acceleration of the bullet? (Take the initial velocity of the bullet to be in the positive direction. Indicate the direction with the sign of your answer.)

Part B: How long did it take the bullet to come to rest once it entered the wood?

Part C: What was the force exerted by the wood on the bullet? (Indicate the direction with the sign of your answer.)

I need help to find how long it took the bullet to come to rest once it entered the wood.