28. PART 1: Caleb is investigating the effect of friction on the motion of an
object. He uses the following supplies for the investigation:
1. a wooden block
2. three ramps, each ramp is the same height and length but
has a different surface (smooth wood, carpet, rough
sandpaper)
3. a stopwatch
Caleb tests his hypothesis that the smooth wood ramp surface
causes less friction than the carpet and that the carpet causes less
friction than the rough sandpaper.
A. Describe a procedure using these supplies that Caleb may
follow to test his hypothesis.