Constant requires being so that the roller coaster

Reference no: EM13674741

A roller coaster of mass 1400 kg is launched from ground level by a spring. If the spring is compressed by 2.8 m, what does the constant requires being so that the roller coaster has a spread of 16 m/s as it passes over the crest of a 21 m height?

Reference no: EM13674741

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