Question

someone ans this please​

Answer 1

Answer:

the above is the answer

if you understand I will feel happy

Answer 2

let initial velocity=v

and v=0

from Newton's 2 law

f=ma

and

a=f/m

and we know

(v)^2=(u)^2-2as

0=(v)^2 -2as

2as=(v)^2

2 f/m *s=(v)^2

or s=m(v)^2/2fm

from work energy theroem

w=k.e

ke=f*s

k.e=f*m(v)^2/2fm

here f is cancel

so k.e =1/2 m(v)^2

hence it is proved and we use dimensionaless analysis..

so I hope u guys able to understand solve it by urself to get results