I need help with this problem. I dont know what equation to use.(adsbygoogle = window.adsbygoogle || []).push({});

A 5.5g bullet is fired into a block of wood w/a mass of 22.6g.

The wood block is initially at rest on a 1.5m tall post. After

the collision, the wood block and bullet land 2.5m from the base of the post. What is the initial speed of the bullet?

I tried to do this myself but all I got was the givens, I had no idea of where to start!

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# Wood block collision

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