(Answered) 1 a race car traveling at a tangential speed of 90 ms goes

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1. A race car traveling at a tangential speed of 90 m/s goes around a curve that has a radius of 50m. The combined mass of the car and driver is 750kg. What is the centripetal acceleration of the car? What is the magnitude of the centripetal force of the car?

2. A roller coaster car starts from rest at the top of the hill with a vertical height of 100m. Ignoring friction, what is the velocity of the roller coaster when it reaches the bottom of the hill? (Inital PE=Final KE)

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