velocity after collision and increase of internal energy ΔU?
Two balls are moving against each other in a straight line
v1 = v2 = 2m / s
m1 = 4 kg
m2 = 1 kg
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Two balls are moving against each other in a straight line
v1 = v2 = 2m / s
m1 = 4 kg
m2 = 1 kg
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Incomplete question. We don't know whether the balls stick together. We don't know whether they rebound, nor with what proportion of the original kinetic energy. What's the entire question? Are v1 and v2 the initial speeds of ball 1 and ball 2, or the speeds of *both* balls before the collision and *both* balls after the collision, or what?