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April 20, 2014

Homework Help: Physics

Posted by Elle on Tuesday, November 29, 2011 at 10:44pm.

Two bullets have masses of 2.4 g and 5.2 g, respectively. Each is fired with a speed of 37.0 m/s.
a) What is the kinetic energy of the first
bullet?
b) What is the kinetic energy of the second bullet?

I initially used KE=1/2MV^2 and got 1642.8 J, but got it wrong. What is my mistake?

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