8. A rollercoaster is moving at +6.55 m/s from an initial height of 12.0 meters when it rolls down a hill and up a secon
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8. A rollercoaster is moving at +6.55 m/s from an initial height of 12.0 meters when it rolls down a hill and up a secon
8. A rollercoaster is moving at +6.55 m/s from an initial height of 12.0 meters when it rolls down a hill and up a second hill that is 9.50 meters high. How fast will it be going at the top of the second hill?
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