Question

A body rolling down a hill has

• A. K.E. only
• B. P.E. only
• C. Neither K.E. nor P.E
• D. Both (a) and (b)

Answer 1

Answer: (D)

Both (a) and (b)

While rolling down from hill a body will have some Potential energy due to height wrt to ground and due to rolling it will have some Kinetic energy .As it will keep rolling down , Its PE will change into KE

So $E_{Total}=mgh+\frac{m{v}^2}{2}$