For the red car to go fast enough to win the race − but not so fast as to skid off the track − it needs to travel at 24.6 miles per hour (mi/h). The car’s control panel only accepts meters per second (m/s) as input, however. You need to convert from mi/h to m/s.

Some conversion factors that may help include 5,280 feet to a mile and 0.305 meters to a foot.

In the simulation, enter the speed in m/s, to the nearest 0.1 m/s. Press GO to start the race. Press RESET if you want to try again.

If you have trouble, consult the section on converting units.