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the answers are on the paper but i'm not sure how to get to those answers Unit 4 Practice Problems 1.) A 350 kg roller

the answers are on the paper but i'm not sure how to get to those answers

Unit 4 Practice Problems 1.) A 350 kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop shown below. B 14.00 m 25.0 m 12.0 m 3.00 m (a) How fast is this roller coaster moving at point B? (answer: 16 m/s) (b) How hard does it press against the track at point B? (Answer: 1.15x104

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