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December 21, 2014

December 21, 2014

Posted by **Kathy** on Friday, May 3, 2013 at 7:39pm.

Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed.

(a) Which ball has the greater momentum?

(b) Which ball has greater kinetic energy?

Thank you

- Physics (ASAP PLEASE) -
**bobpursley**, Friday, May 3, 2013 at 8:03pmmomentum is mass*velocity

momentumA=M/2*2V=MV

momentumB=MV

they have the same momentum

KE=1/2 m v^2

KEA=1/2 m/2*(2v)^2=mv^2

KEB=1/2 m *v^2=1/2 mv^2

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