Question

A roller coaster train with a mass of 500 kg stops at the top of a hill. If the hill is 110m high, what is the potential energy of the train?

Answer 1

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Answer 2

Given :

Mass of roller coaster train , m = 500 kg .

Height of hill , h = 110 m .

To Find :

The potential energy of the train .

Solution :

We know , potential energy of an object of mass m at height h is given by :

$U=mgh$

Here , $g=9.8\ m/s^2$ .

Putting all value in above equation , we get :

$U=500\times 9.8\times 110\ J\\\\U=539000\ J\\\\U=539\ kJ$

The potential energy of the train is 539 kJ .

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