Posted by **Joseph** on Monday, September 10, 2012 at 3:37pm.

A toy train is moving on a track from right to left. You are told that work is the dot product of force and displacement. In what direction would you apply a force so that you do the most negative work on the train?

a)You would apply a force that is in the left to right direction.

b)You would apply a force that is in the right to left direction.

c)You would apply a force that is in the down to up direction.

d) You would apply a force that is in the up to the down direction.

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