A roller-coaster car of mass 1000 kg starts at height 20 m and uses energy conservation with negligible friction. What speed would it have at the bottom if it started from rest at the top and descended to bottom height 0 m? (v = sqrt(2 g h))

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Multiple Choice

A roller-coaster car of mass 1000 kg starts at height 20 m and uses energy conservation with negligible friction. What speed would it have at the bottom if it started from rest at the top and descended to bottom height 0 m? (v = sqrt(2 g h))

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