Question

A 222 kg iceboat glides with an initial velocity 3.33 m/s north across a frozen lake where mu=.1. The wind then exerts a constant force of 444 N @ 67.5 degrees on the boat as the boat travels 111m @90 degrees. Find the final speed of the iceboat.

Answer 1

so you have to determine the contribution from the wind along the y-axis and the x-component is irrelevant here.

you also have to take into account the frictional force acting south ( i forgot to include it in the diagram).

Find the net acceleration then use it with the initial velocity in a kinematic equaiton