litty8040 litty8040

18-12-2021
Physics

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A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is 38 m/s when it reaches ground level. What was its speed when its height was half that of its starting point

Respuesta :

dahalmanish259 dahalmanish259

18-12-2021

Explanation:

look !

speed= 38m/s

start from rest= 0

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