Question

a 1500 kg car accelerates along a flat track to a speed of 20 m/s. how much does its gravitational potential energy increase over the length of the track?

Answer 1

Hello!

`\large\boxed{\text{0 Joules}}`

Recall that gravitational potential energy is equal to mgh, or the product of mass, gravity and height.

It is given that the track is flat, which means that there is no change in height. Because of this, we can set h = 0:

PE = m · g· (0)

PE = 0 J