Physics Assignment Help >> Newton’s Laws of Motion >> Newton’s Second Law of Motion

Newton’s first law of motion describes only the state of motion of an object or body when no external force is applied. It does not provide quantitative measurement of net force and acceleration.

Newton’s Second Law of Motion

Second law of motion determines the net force effect on body or object. It states the relationship between force, acceleration and mass of body. Newton’s second law of motion is mentioned mathematically as

F=ma

Defining Newton’s Second Law

Time rate of change of momentum of a body is equal to the net force applied on body

F = dp/dt

F = d(mv)/dt

For invariant mass of body

F= m (dv/dt)

F=ma

Where m=mass of body (positive scalar quantity)

F= force applied on body, a=acceleration

The direction of force and acceleration same

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