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Physics, 12.08.2020 07:01 julianrod1201

A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is 26 m/s when it reaches ground level. What was its speed when its height was half that of its starting point?

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A roller coaster starts from rest at its highest point and then descends on its (frictionless) track...
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