PHYSICS
posted by KIEN on .
A 5.00g bullet is fired into a 500g block of wood suspended as a ballistic pendulum.
The combined mass swings up to a height of 10.00 cm. What was the magnitude of the
momentum of the combined mass immediately after the collision?

Ans: 0.707 Kg m/sec

A 5.00g bullet is fired into a 500g block of wood suspended as a ballistic pendulum.
The combined mass swings up to a height of 10.00 cm. What was the magnitude of the
momentum of the combined mass immediately after the collision?
The Ans is 0.707 kg m/sec
I do not know how to go get this answer 
finding t based on h=1/2*g*t^2 and then v=g*t and then (M+m)*v