Asked by Anonymous
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the objectfs speed. If you do work W, suppose the objectfs final speed is v. What will be the objectfs final speed if you do twice as much work?
1. 4 v
2. 2 v
3. Still v
4.v/ã2
5. v*ã2
1. 4 v
2. 2 v
3. Still v
4.v/ã2
5. v*ã2
Answers
Answered by
drwls
Work done is proportional to V^2.
If work doubles, the V must increase by a factor sqrt2
If work doubles, the V must increase by a factor sqrt2
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