Question

Potential energy of a 1200 kg boulder on a cliff 45 m above the ground

Answer 1

Potential Energy (PE) is found using the equation mgh, where

m = mass,
g = force of gravity,
h = height

Since we are using the metric system, our force due to gravity will be 9.8m/s^2. Plug in what we know, and we get

(1200kg)(45m)(9.8m/s^2)=PE

Multiply those three variables together, and you will get your potential energy, in Joules! Good luck!

Answer 2

Answer: Therefore, the potential energy of a 1200 kg rock on a cliff 45 m above the ground is 529200 Joules.

Step-by-step explanation:

Potential energy of a 1200 kg boulder on a cliff 45 m above the ground.

Data:

Ep = ?

m= 1200 kg

h = 45 m

g = 9.8 m/s²

The formula for potential energy is:

Ep = m × g × h

Where

• Ep = potential energy
• m = mass
• g = acceleration due to gravity
• h = height

Since we must calculate the potential energy, it is not necessary to clear the formulas. We substitute data and solve:

Ep = 1200 kg × 9.8 m/s² × 45 m

Ep = 529200 Joules

Therefore, the potential energy of a 1200 kg rock on a cliff 45 m above the ground is 529200 Joules.