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**Problem**: 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. v /√2
2. 4 v
3. √2 v
4. 2 v
5. Still v

###### FREE Expert Solution

###### Problem Details

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. v /√2

2. 4 v

3. √2 v

4. 2 v

5. Still v

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