Ms. Sullivan's class is investigating simple machines. They built a ramp to roll tennis balls down, and measured how far they rolled. The tennis balls released at the top of the ramp all traveled about the same distance.
If they wanted the balls to roll even further, what could they do?
A)
Build a ramp that is taller.
B)
Build a ramp that is shorter,
C)
Use tournament grade tennis balls.
D)
Try the experiment in a different hallway.