To extend the electrical system between the main panel and the secondary panel, the electricians used
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Answer:
No. Twice as much work will give the ball twice as much kinetic energy. But since KE is proportional to the speed squared, the speed will be times larger.
Explanation:
The work done on the ball is equal to the kinetic energy gained by the ball:
So when the work done doubles, the kinetic energy doubles as well:
However, the kinetic energy is given by
where
m is the mass of the ball
v is its speed
We see that the kinetic energy is proportional to the square of the speed, . We can rewrite the last equation as
which also means
If the work is doubled,
So the new speed is
So, the speed is times larger.