Question

10. State Newton's second law of motion. Under what
condition does it take the form F = ma ?​

Answer 1

Answer:

Newton's second law of motion - The rate of change of momentum of a body is directly proportional to the force applied on it and this change in momentum takes place in the direction of the applied force, i.e.

F∝ ∆p/∆t

where p denotes momentum and Δt is the change in momentum in time Δt.

When mass m of the body is constant at velocity v (which is much smaller than the velocity of light c) then the rate of change of momentum is:

F∝ ∆p/∆p= m=∆v/∆t

F=ma

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Answer 2

Explanation:

The rate of change of momentum of a body is directly proportional to the force applied on the body & it takes place in the direction of the force

Thus, it becomes equal to ma, when mass is constant