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Solve the all parts of given problem:

Problem: An airplane pilot fell 350m after jumping from an aircraft without his parachute opening. He landed in a snow bank, creating a crater 1.5m deep, but survived with only minor injuries. Assuming the pilot's mass was 79kg and his terminal velocity was 37m/s.

Part I: Estimate the work done by the snow in bringing him to rest.

Part II: Estimate the magnitude of the average force exerted on him by the snow to stop him.

Part III: Estimate the work done on him by air resistance as he fell.

I need help to find the magnitude of the average force exerted on him by the snow to stop him and express your answer using two significant figures.

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