Answers

2014-04-02T10:13:36+05:30
Inertia of rest: A body which is rest continues to be in rest unless acted upon by an external force.

Inertia of motion: A body in motion continues to be in motion unless acted upon by an external force.

Inertia of motion: A body in motion  in a specific direction continues to be in motion in that direction unless acted upon by an external force to change the direction.
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2014-04-02T10:48:35+05:30
Inertia of rest is defined as the property by virtue of which a body continues to be at rest unless acted by some external force to change that condition.
inertia of motion is defined as the property by virtue of which a body continues to be in motion along a straight line unless acted upon by some external force to change that condition.
inertia of motion along a particular direction is defined as the property by virtue of which the body continues in that particular direction unless acted upon by some  force to change that direction.
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