Question

Francine is standing on the edge of a cliff. She determines that she has 6615J of gravitational potential energy relative to the bottom of the cliff. If she has a mass of 45kg, how high is the cliff?

Answer 1

h = 14.98 [m]

Step-by-step explanation:

We can calculate this height using the definition of potential energy, which tells us that this energy is equal to the product of mass by gravitational acceleration by height. In this way we can find the height, by means of the following equation:

`E_(pot)=m*g*h`

where:

Epot = potential energy = 6615 [J]

m = mass = 45 [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation [m]

`6615 = 45*9.81*h\\h = 14.98 [m]`