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Aaron is pulling his little sister in a sled. The combined mass of his sister and the sled is $28\:kg$. He pulls the sled at a constant speed across the snow (coefficient of kinetic friction, $\mu = 0.10$) and his force on the sled is angled at $25^\circ$ above the ground. He pulls the sled $18\:m$ across level ground before pulling his sister $22\:m$ up a $15^\circ$ hill.

Suzanne Taylor. Created for Copyright 2016. All Rights Reserved.

What is the total work done by Aaron on the sled?

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