A 65 kg person running at 2.0 m/s jumps onto the skim board at right. Theskim board is 50 cm wide and 120 cm long, with an area of 0.60 m².Part ADraw a sketch of this situation.Part BIf the person jumps onto the board on sand with a coefficient of friction off=0.50, what force will resist the forward movement of the board [N]?Recall the friction force is the normal force times the coefficient of friction.Part CNow assume the person jumps onto the board on a 0.50 cm film of fresh water at 30°C. UseNewton's law of viscosity to estimate the force resisting the forward movement of the board.

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