Question

State nwtons second law ov motion and derive it mathematically

Answer 1

It states that rate of change of momentum is directionally proportional to force applied.
Mathematically:
P1=my
P2=mv
delta p= p2 - p1=mv-my
delta p=m (mv-mu)
by second law
m (v-u)/t is directly proportional to f
ma is directly proportional to f
F= kma
where k is a constant =1
F=ma