Answer: The amount of power used by Jackie will be more the second time.
Explanation: Power can be written as:
[tex]Power=\frac{Work}{Time}[/tex]
As the power and time follow inverse relationship, the amount of power used by Jackie will be less in first case because the time taken is more.
In the second case, the time taken is less than the first case, so the power used will be more.
