Answer to Question #12975 in Mechanics | Relativity for Sara
KE = m * V^2 / 2
V = sqrt(2 * KE / m)
V = sqrt(2 * 400000 / 1100) =
PE = m * g * h. If PE = KE,
h = KE / (m * g)
400000 / (1100 * 9.81) = 37.068 m
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A 100 kg roller coaster is released from position "A" with an initial speed of 30 m/s. The designer of the roller coaster wants the cart to come to a complete stop at point "B". How high must point "B" be above the ground? (use g = 9.8 m/s2)