Question

What is the potential energy of a ball that weighs 3kg and is at a height of 3m from the ground?

Answer 1

Answer:

88.2 J (I put 10kg instead of 3kg last time oops)

Explanation:

https://www.calculatorsoup.com/calculators/physics/gravitational-potential.php

Answer 2

Answer:

$\boxed {\boxed {\sf 88.2 \ Joules}}$

Explanation:

Potential energy is energy due to position. It is the product of the object's mass, height, and the gravitational acceleration.

$E_p= m \times \ g \times h$

The mass of the ball is 3 kilograms and the height is 3 meters. Assuming this is on Earth, the gravitational acceleration is 9.8 meters per square second.

• m= 3 kg
• g= 9.8 m/s²
• h=3 m

Substitute these values into the formula.

$E_p= 3 \ kg \times 9.8 \ m/s^2 \times 3 \ m$

Multiply the first two numbers.

$E_p=29.4 \ kg*m/s^2 \times 3 \ m$

Multiply again.

$E_p= 88.2 \ kg*m^2/s^2$

• 1 kilogram square meter per square second is equal to 1 Joule.
• Our answer of 88.2 kg*m²/s² is equal to 88.2 Joules

$E_p= 88.2 \ J$

The ball has 88.2 Joules of potential energy.