A roller coaster starts out being pulled to the top of a, Physics

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A roller coaster starts out being pulled to the top of a

Problem: A roller coaster starts out being pulled to the top of a 17m high hill, where it is dropped ( so it starts out not moving at the top of the hill.) it then goes all the way down at a steep angle before going around a curve, then moving back up to a height of 9m off the ground.

Part I: How fast will it be traveling at the point?

Please show work I think I have the answer just not positive. Thanks.

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