Posted by **Anonymous** on Saturday, January 16, 2010 at 2:52pm.

You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work?

1. 4 v

2. 2 v

3. Still v

4.v/2

5. v*2

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