Question

A ball is rolled on a frictionless surface and no other force acts on it.Will its speed decrease,increase or remain unchanged?

Answer 1

If any of the force is not acting on the ball which was rolled then it's velocity will remain unchanged.........According to Newton's first law.....a body in motion continues to be in motion and a body at rest continues to be in rest until and unless an external force is applies on the body.

Answer 2

hi.....
Since the ball is rolled on a friction less surface... the speed will increase... coz their is no opposite forces acting against it....

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