Homework Help: physics

Posted by pauleen on Wednesday, October 7, 2009 at 5:36am.

(II) A grocery art with mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20-degree angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 15 m long.

Please help me solve step by step.

physics - pauleen, Wednesday, October 7, 2009 at 6:08am
I tried to solve it.
No work done by gravity
No work done by normal
169.14 J by applied force
-169.14J by the friction force

are those correct?
physics - bobpursley, Wednesday, October 7, 2009 at 9:19am
correct.

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