Question

How much potential energy does a 20-kg New Year’s Eve ball have at the top of a 100-m-tall pole?

Answer 1

First you need velocity. And hight is 10 m. Now the velocity. Let. g = 10m/s. V=mgh. V= 20 . 10. 10. 2000m/s. Now the kinetic energy will be. Ke = 1/2 mv^2.