GRAVITATIONAL POTENTIAL ENERGY

[fotjone]

a 29kg girl is on a swing. if she has a velocity of 2.0 m/s as the swing moves through the lowest point in the path, what is her gravitational potential energy at te highest point in the swing if her kinetic energy at the bottom of the swing is 58joules?
Also what is the height of the swing at the highest point in the path?

 

[Unco]

Ignoring friction (which in reality causes to slow down), Ek at bottom = Ep at either endpoint.