Physics, 18.10.2019 22:30 vivi297

Arollercoster car and passengers of total mass 1800kg starts from rest at 80m above the ground. ignoring air resistance and friction what will the speed be:
at ground level
at top of the next peak which has height of 30m
take gravity 10n/kg
i calculated it as 1697m/s, by converting gravitational potentional energy to kinetic energy to calculate the velocity/speed.
did you do the same?

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