A river 75. m wide is travelling due south at 2.0 m/s. A fisherman trying to cross the river heads due east in their boat at a speed of 3.0 m/s relative to the river. Determine the resultant velocity of the boat relative to the river.

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How long will it take the fisherman to cross the river?

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.