The mass of the rock is 1220 kg. It had 400 J of potential energy when it rolled down the hill. calculate the heihht.

potential is equal to mgh

we know that mass = 1220 kg

g=9.8 0r 10

400=1220*9.8*x

400=11956x

x=400/11956

height = 3.2 meters (approximately)

Explanation:

Potential energy is usually defined as the amount of energy that is stored in an object by virtue of its position. It is denoted by P. E.

Mathematically,

⇒ P. E = mass * gravity * height

Given that,

P. E = 400 J

Mass, m = 1220 kg

Gravity can be taken as, g = 9.8 m/sec²

⇒ 400 = 1220 * 9.8 * height

⇒ Height = 400 : (1220 * 9.8)

⇒ Height = 400 : 124.5

⇒ Height = 3.2 meters