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4. You release a frictionless cart at the top of each of the 2 ramps. Both carts are released
from rest. The ramps have the same height as each other at the starting and finishing
points. One has a small bump up then down just before the end. The other has a small
bump down then up. Which cart has the larger speed at the finish? Why?
Ramp A
Ramp B
start
start
finish
finish

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