Imagine a roller coaster, with an initial speed of 5 m/s downhill, descends
20 m in height. now suppose the roller coaster, with an initial speed of
5 m/s uphill, coasts uphill, stops, and then rolls back down to a final point
20 m below the starting point.
would the final speed be the same in these two cases? assume friction is
negligible.
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Imagine a roller coaster, with an initial speed of 5 m/s downhill, descends
20 m in height. no...
20 m in height. no...
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