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3 years ago

The potential energy of a 40-kg cannonball is 14000 J. How high was the cannon ball to have this much potential energy?

Physics

1 answer:

Arturiano [62]3 years ago

4 0

Answer:

35.71 m

Explanation:

Potential energy is calculated using this formula:

PE = mgh
where m = mass (kg). g = gravitational acceleration on Earth (9.8 m/s²), h = height (m)

We are given 3 out of the 4 variables in this problem. We want to solve for h, the height of the cannon ball.

List out the known variables:

PE = 14,000 J
m = 40 kg
g = 9.8 m/s²
h = ? m

Substitute these values into the potential energy formula.

14,000 = (40)(9.8)h
14,000 = -392h
h = 35.7142857143

The cannonball was 35.71 m high to have a potential energy of 14,000 J.

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