Answer:
Explanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
PE = 10 × 10 × 20 = 2000
We have the final answer as
Hope this helps you
Answer:
[tex]\boxed {\boxed {\sf 1,960 \ J}}[/tex]
Explanation:
Potential energy is the energy an object possesses due to its position. It is calculated using the following formula:
[tex]PE= mgh[/tex]
The mass (m) of the rock is 10.0 kilograms. The rock is on top of a hill that is 20.0 meters tall (h). Assuming this situation is occurring on Earth, the acceleration due to gravity is 9.8 meters per second squared (g).
Substitute the values into the formula.
[tex]PE= (10.0 \ kg)(9.8 \ m/s^2)(20.0 \ m)[/tex]
Multiply the first two values together.
[tex]PE=(98 \ kg*m/s^2)(20.0 \ m)[/tex]
Multiply again.
[tex]PE= 1960 \ kg*m^2/s^2[/tex]
Convert the units. 1 kilogram meter squared per second squared is equal to 1 Joule, so our answer of 1960 kg*m²/s² is equal to 1960 J.
[tex]PE= 1960 \ J[/tex]
The rock has 1,960 Joules of potential energy.
