A B 15.0 m 14.A roller coaster is travelling along a frictionless track as shown in the diagram. If the speed of the rol
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A B 15.0 m 14.A roller coaster is travelling along a frictionless track as shown in the diagram. If the speed of the rol
A B 15.0 m 14.A roller coaster is travelling along a frictionless track as shown in the diagram. If the speed of the roller coaster at point A is 3.0m/s and the speed at point B is 13m/s, what is the height of the roller coaster at point B? [6.8 m] 7.0 m
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