hernadezmirian751 hernadezmirian751
  • 03-10-2019
  • Mathematics
contestada

a 10k rock is dropped from a height of 20m and hits the ground below at a speed of 60m/s. Calculate the gravitational potential energy before it was dropped

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TaeKwonDoIsDead
TaeKwonDoIsDead TaeKwonDoIsDead
  • 04-10-2019

Answer:

1960 Joules

Step-by-step explanation:

The formula for Gravitational Potential Energy (GPE) is:

GPE = mgh

Where

m is the mass in kg

g is the gravitational field strength (in earth, it is 9.8)

h is the height in meters

In the questions, it is given

mass = 10 kg

height = 20 m

g = 9.8

Substituting, we get:

GPE = mgh

GPE = (10)(9.8)(20) = 1960 Joules

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