A skater is moving with a speed of 3.3 m/s when she is at a height of 5 m above the ground on the frictionless track below. Neglect the effects of air resistance.
Use the conservation of energy to determine the skater's speed when she is 2 m above the ground on her way down the track.
Use the conservation of energy to determine the skater's speed when she is 2 m above the ground on her way back up the far end of the track.