momentum prob.?

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If the momentum of a ball is doubled, then the kinetic energy is??

please help, thanks!

2007-03-10 03:57:56 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

Assuming the ball is the same ball, the mass is the same. This way the only way to alter momentum is to vary velocity. If you double the momentum by doubling the velocity than KE is quadrupled since KE depends on velocity squared.

2007-03-10 04:05:23 · answer #1 · answered by Ghidorah 3 · 0⤊ 0⤋

If the mass stays the same then the new velocity is twice as much. KE=1/2mv^2. So the KE is 4 times as much.

2007-03-10 04:06:10 · answer #2 · answered by smartdude474 2 · 0⤊ 0⤋