Question

Todd and Angela set up a ramp and released several cars from the top. If Todd and Angela want to determine the average speed of their cars down the ramp, what information do they need?

A.
acceleration from rest and distance down the ramp

B.
distance down the ramp and time down the ramp

C.
time down the ramp and acceleration from rest

D.
direction of motion and time down the ramp

Answer 1

B. distance down the ramp and time down the ramp

Average speed = total distance traveled ÷ total time, so you need the distance along the ramp and the time it took.