# The potential energy of an apple is 4.5 joules. The apple is 3.2 meters high. What is the mass of the apple?

##### 1 Answer

Feb 8, 2016

The mass of the apple is

#### Explanation:

Potential energy in joules is mass (in kg,) multiplied by the acceleration due to gravity (9.8 m/sec^2) multiplied by height in meters.

Rearranging to make the mass the subject:

Hence it is 4.5 divided by (9.8 times 3.2) multiplied by 1000 for converting into grams, i.e. approximately