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July 22, 2014

Homework Help: physics

Posted by Anonymous on Friday, February 26, 2010 at 7:04pm.

A roller-coaster car speeds down a hill past point A where R1 = 8.0 m and then rolls up a hill past point B where R2 = 14.0 m.

The car has a speed of 21.0 m/s at point A. if the track exerts a normal force on the car of 2.19 multiplied by 104 N at this point, what is the mass of the car?

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