Solve this:

Dear Student ,

Newton’s Second law of motion states that the force ‘F’ acting on a body of mass ‘m’ producing acceleration ‘a’ is equal to the product of the mass and acceleration of the body. That is, F = ma

It can be derived from the concept of momentum.

Suppose a body of mass ‘m’ has initial velocity ‘u’ and after time ‘t’ its velocity becomes ‘v’. The initial momentum is, P= mu

The final momentum is Pf = mv

The change in momentum with respect to time ‘t’ is = (mv - mu)/t = m (v - u)/t = F …….(1)

We know, acceleration, a = (v - u)/t

So, (1) implies,

F = m(v – u)/t = ma

Which is Newton’s Second law of motion.
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