Question

What is the gravitational potential energy of a 3 kg ball kicked into the air at a height of 5 meters?

Answer 1

formula for gravitational P.E =mgh

Solution:-mass=3kg height=5metre and gravity=9.8 or 10m/sec² so P.E=mgh , 3×9.8×5=147kgm²/sec²

Answer 2

The gravitational potential energy of the ball is equal to 147 Joules.

Given the following data:

• Mass of ball = 3 kg

• Height = 5 meters

We know that the acceleration due to gravity (g) of an object on planet Earth is equal to 9.8 $m/s^2$

To calculate the gravitational potential energy of the ball:

Mathematically, gravitational potential energy (G.P.E) is given by the formula;

$G.P.E = mgh$

Where:

• G.P.E is the gravitational potential energy.

• m is the mass of an object.

• g is the acceleration due to gravity.

• h is the height of an object.

Substituting the given parameters into the formula, we have;

$G.P.E = 3 \times 9.8\times 5$

G.P.E = 147 Joules

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