Question

A roller-coaster car shown in the figure below is pulled up to point 1 where it is released from rest. Take y = 39 m

 

 

Part A:

Assuming no friction, calculate the speed at point 2

Express your answer to two significant figures and include the appropriate units.

Part B: Calculate the speed at point 3

Express your answer to two significant figures and include the appropriate units.

Part C: Calculate the speed at point 4

Express your answer to two significant figures and include the appropriate units.