Energy is the same top and bottom, Ke at bottom, Pe at top
Pe = m g h = 80 * 10 * 30 Joules
the end.
The mass of the roller coaster below is 80 kg. It starts from rest at a height of 30 m and reaches a speed of 20 m/s at point B. Assume no energy is lost due to dissipative forces such as friction. Also use g = 10 m/s2.
What is the total mechanical energy of the roller coaster cart at point A?
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