Answer:
They all used the same power.
Explanation:
Power is equal to the ratio between the work done (W) and the time taken (t):
[tex]P=\frac{W}{t}[/tex]
Let's calculate the power used in the three scenarios:
A) [tex]P=\frac{120 J}{6 s}=20 W[/tex]
B) [tex]P=\frac{160 J}{8 s}=20 W[/tex]
C) tex]P=\frac{200 J}{10 s}=20 W[/tex]
So, the power used is the same in the three scenarios.