Answers

2015-08-13T18:36:25+05:30
We know because students associate pushes and pulls with moving or active objects they often believe that stationary or passive objects have no forces acting on them.
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2015-08-13T18:38:01+05:30
a object is stationary when it has 0 velocity.if it has moved 0 meters in some time period  it has is stationary .Displacement = 0 does not imply that an object is stationary.and if no force acting on it.
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