The potential energy of the ball at a height of 1.2 m is 6 J. Find the mass of the ball.

Epot = 6 Joules – potential energy of the ball at height h;

h = 1.2 meters – height;

g = 10 meters per second squared – the acceleration of gravity.

It is required to determine m (kilogram) – the mass of the ball.

To determine the mass of the ball, you must use the following formula:

Epot = m * g * h, hence:

m = Epot / (g * h) = 6 / (1.2 * 10) = 6/12 = 1/2 = 0.5 kilograms (500 grams).

Answer: The mass of the ball is 0.5 kilograms (500 grams).