Hi can anybody verify if im using the correct formula,(adsbygoogle = window.adsbygoogle || []).push({});

Here is the problem first,

A bullet embeds itself in a pendulum bob, and the bullet+bob together swing up to some maximum height, which is easy to measure. IF the bullet has a mass of 15g, the bob's mass is 4kg, and the combination reaches a height of 23cm after impact, what was the speed of the bullet just before impact?

Do I use this formula:

v= (mass of bullet/ mass of pendulum bob + mass of bullet)(2(9.80m/s^2)(h))^1/2

THANKS AGAIN!

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# Homework Help: What was the speed of the bullet just before impact?

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