potential energy/please explain answers, as I\'m totally lost, thank you Conside

Question

potential energy/please explain answers, as I'm totally lost, thank you

Consider a skier heading down a ski jump. The starting point (0m), from rest, is 60m above the earth, the lowest point (80m) is 5m above the earth and then it ramps back up to 15m above the earth at 100m.
1.What form of energy is maximized at 80m? KE, GPE, THermal, none
2.If we halve the height of the downhill part of the ramp, the speed of the skier at the 80 m mark will be: the same, half, one quarter, one eighth, some other number

Explanation / Answer

KE is maximized at 80m.

If we halve the height of the downhill part of the ramp, the speed becomes v/2. Therefore, by some other number.

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