1. A snowmobile pulls a 10 kg sled across the snow with an acceleration of 3.0 m/s^2 for a distance of 25 m, if the coefficient of friction between the snowmobile, sled and snow is 0.82:

a)calculate the work done by friction (3 marks}

b)calculate the amount of work that the snowmobile does on the sled (3 marks)

c) calculate the total work done on the sled. (2 marks)