The three blocks shown are released from rest and are observ…

The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.2 m/s2. What is the magnitude of the friction force on the block that slides horizontally? Disregard any pulley mass or friction in the pulley and let M = 3.0 kg.

A = 250 m wide river flows with a uniform speed of = 4.0 m…

A = 250 m wide river flows with a uniform speed of = 4.0 m/s toward the east. I take off from the south bank in a boat that moves at = 6.0 m/s with respect to the water to arrive at point on the north bank directly north of my launch. What heading did my boat have to make the journey?