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From second law we have F α m(v - u)/t

F = kma where k = 1

So,

F = ma

so it the body is at rest then the acceleration is zero so F = m x 0 = 0 N

so the net unbalanced force acting on it is also zero so hence it states that a body at rest tends to attains it's state of rest and vice-versa.

F = kma where k = 1

So,

F = ma

so it the body is at rest then the acceleration is zero so F = m x 0 = 0 N

so the net unbalanced force acting on it is also zero so hence it states that a body at rest tends to attains it's state of rest and vice-versa.