to 75 cm and the other hills to 0 cm. What is the height in meters?
What is the potential energy of the car, in joules?
: Kinetic energy (
) depends on the mass and speed (
) of the object. The
equation for kinetic energy is:
set to 75 cm, click
and allow the car to reach the bottom.
What is the final speed of the car, in meters per second?
What is the kinetic energy of the car, in joules? (Use the mass in kg.)
How does the car’s kinetic energy at the bottom of the hill compare to its potential
energy at the top?
: With no friction, you can use the relationship between potential and kinetic
energy to predict the speed of the car at the bottom of this hill from its starting height. To do
this, start by setting the kinetic and potential energy equations equal to one another:
Use algebra to solve for the speed.