physics

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You do a certain amount of work on an object initially at rest, and all the work goes into increasing the objectfs speed. If you do work W, suppose the objectfs final speed is v. What will be the objectfs final speed if you do twice as much work?
1. 4 v
2. 2 v
3. Still v
4.v/ã2
5. v*ã2

  • physics -

    Work done is proportional to V^2.

    If work doubles, the V must increase by a factor sqrt2

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