# physics

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A skydiver jumps out of a plane. Does the mechanical energy of the jumper change while she is falling? Ignore the effects of air resistance.

• physics -

If friction is ignored, the total mechanical energy (kinetic + potential) does not change.

However, this is s stupid question. Would a skydiver jump without a parachute? You need the air resistance to stay alive.

• physics -

yes

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