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May 19, 2013

# Homework Help: physics

Posted by mat on Monday, March 7, 2011 at 4:50pm.

A bullet of mass 10.8 g leaves a gun barrel with a velocity of 511 m/s. What is the bullet's kinetic energy? answer in joules

• physics - mat, Monday, March 7, 2011 at 4:50pm

hmm sum1 has the same ? as me?

• physics - Henry, Tuesday, March 8, 2011 at 11:42pm

10.8g = 0.0108kg.

KE=0.5mV^2 = 0.5*0.0108*(511)^2=1410J.

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