Question

What is statement of work energy theory and prove ti

Answer 1

Ir states that the work done by the net force acting on a body is equal to the change produced in the kinetic energy of the body

v^2-u^2 =2as

now multiplying 1/2m to both side we get

1/2mv^2-1/2mu^2=1/2m*2as

=fs(ma=f)

Thus,

KEf -KEi=W (1/2mv^2=KEf

1/2mu^2=KEi

fs=W)

Thus proved.