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Physics, 27.06.2019 08:30 shubbs1038a
Aroller coaster starts from rest at its highest point and then descends on its (frictionless) track. its speed is 40 m/s when it reaches ground level. part a what was its speed when its height was half that of its starting point? what was its speed when its height was half that of its starting point? 33 m/s 14 m/s 20 m/s 28 m/s
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Aroller coaster starts from rest at its highest point and then descends on its (frictionless) track....
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