#2

Problem: What impact doesth surface have on how fast different sized balls can travel?

I think that the small ball on the smoth lane, will go farther than the bigger ball, because fiction and gravity will have more effect on it.

CV:the force of the push, the angle of the ramp
IV:The leagth the balls travels down the slope
DV:The surface of the ramp, the balls

materials-
2 differnt weighted balls
A lego ramp
flat legos
tape measure
marker

procedure-
Gather Materials
Grab the bumpy ramp and mark where you are set the ball up each time.
garb the heavy ball and put it on the ramp
give it a little push
measure how far it went
record data
do this 3 times
now the same thing but do it with the lighter ball
now do that again but put flat bricks to cover the bumpy spots.
finish data
cleanup