Question

There is a snowball at the top of a cliff that is 1.5 km high. The ball weighs 190 kg.Calculate PE​

Answer 1

M = 190kg

h = 1.5km

We need to convert the units:

h = 1.5 km x 1000 m / 1 km = h = 1500m

Then we need to put in the values:

U = 190 kg x 9.81m/s ^2 x 1500m

U = 2795850 kg x m^2 /s^2

Then you want to convert your units again:

U = 2795850 J