Science Buddies: "Ask an Expert"

i need help to get backgroundresearch,materials,and procedure for this two questins What is the effect of ramp height on a marbles rolling speed? and How does the angle of a ramp affect the speed of a rolling marble?

this due monday the 6 please help.

Late start?

This site talks about it a bit. For this experiment to be presented in a worthwhile fashion you'll need to discuss the vector compontents of the
forces that apply.

http://www.batesville.k12.in.us/physics ... e_roll.htm

If you want to do a better than average job, compare the end velocities of a marble (spehere) and a ring or hoop that wieghs the same as the marble.
They will be different. Your job is to figure out why.

Jim