Materials
2 spheres with the same size and mass
Investigate
Try rolling the spheres toward each other. Note what happens to the speed and direction of each sphere when they collide. Test at least four different methods of having the spheres collide, which may include the following:
Set one sphere in place, and roll the other sphere toward it.
Roll both spheres toward each other with the same initial speed.
Roll both spheres toward each other with different initial speeds.
