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physics 11

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A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream.

How wide is the river ?

  • physics 11 -

    how long did it take to get across?

    how wide is the river?

  • physics 11 -

    A 80KG hockey player has a coefficient of friction u=0.08 between her skates and ice. What is the force of friction on the player?

    0.08(80 x 9.8)

    If the hockey player is coasting, what is the net force?

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