Part A If a boat and its riders have a mass of 800 kg and the boat drifts in at 1.5 m/s how much work does Sam do
to stop it?
Express your answer using two significant figures.

Olympic skier tina maze skis down a steep slope that descends at an angle of 30∘ below the horizontal. the coefficient of sliding friction between her skis and the snow is 0.10. i found maze's acceleration which is 4.1 m/s^2. but how do you determine maze's speed 4.0 s after starting?