Newton’s Laws

Newton’s First Law – Law of Inertia

Sir Issac Newton’s laws are basis for understanding human locomotion  pathology of the lower limb is the result of the body attempting to violate the laws.

Law of inertia:
Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by the forces acting on it. A body at rest will stay at rest unless a force acts on it.

A body in motion has momentum – the momentum will stay constant unless a force acts upon that body.

Momentum = mass x velocity

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