Question

A 310 kg car is parked in a parking garage. If the car has 35,944 J of potential energy, how many

meters above ground is the car?

Answer 1

Gravitational potential energy is the energy stored in an object as the result of its vertical position or height. It can be calculated as its weight times the height. This is:

`\boxed{U_g=W\cdot h=mgh}`

Where:

• W is the weight of the object
• m is the mass
• g is gravitational acceleration
• h is the height

Solving for the h:

`h=(U_g)/(mg) = (35944\;J)/(310\;kg\cdot 9.8\;m/s^2) = 11.8\;m`

R/ The car is parked 11.8 m above ground