a ball of mass m moving at a speed v makes a head collision with an identical ball at rest the kinetic energy of the ball after collision is 4% of the original find coefficient of restitution
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Friction is caused by the irregularities on the two surfaces in contact. Even those surfaces which appear very smooth have a large number of minute irregularities on them. ... So the force of friction is greater if a roughsurface is involved.
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Friction is caused by the irregularities on the two surfaces in contact. Even those surfaces which appear very smooth have a large number of minute irregularities on them. ... So the force of friction is greater if a roughsurface is involved.
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