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Question: a rollercoaster vehicle has a mass of 510 kg when...

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A roller-coaster vehicle has a mass of 510 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 20.0 m/s at point A, what is the force of the track on the vehicle at this point? N (b) What is the maximum speed the vehicle can have at point B in order for gravity to hold it on the track?

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