Friction

The graphs for the speed and kinetic energy have a large change in the neighborhood of the magnet. However, the diagrams should also show an overall decrease in value as the cars move along the track. As before, this decrease is due to interactions involving friction.

For the car with no magnetic interactions you had kinetic energy diagrams such as those in Figure 6.

And for example, if the pair of track magnets is located at distance x = 40 cm, the diagrams should look similar to these ones:

The change from "with friction" to "without friction" in Figure 6 can help us think about how other graphs would look if friction were not present. Imagine the kinetic energy diagram which you drew for the car interacting with a pair of magnets. Draw a sketch as if friction were not present.

Describe your sketch below: