Question

a boy runs up tbe stairs the gain in his potential energy is u if he runs up the same stairs with twice the speed what will be his gain in potential
energy
a U
b 2U
c U/2​

Answer 1

Answer:

we know that potential energy(P•E) = mass(m)×gravity(g)×height(h)

Explanation:

so we can say that height initial is 0 and finial is h.

∆h=h-0

=h

so he got U .After that her initial is h and finial 2h.

∆h= 2h-h

= h

so we can say change in height is same

mass and gravity is also same.

so we can say that gain in potential energy is "U".