Question

During a workout, a football player pushes a blocking dummy a distance of 30 m. While pushing the dummy the same distance
a second time, what would the player need to change to be certain that power output increases?
The player would need to use a greater force and take more time.
The player would need to use a greater force and take less time.
The player would need to use a smaller force and take more time.
The player would need to use a smaller force and take less time.

Answer 1

Answer:

The correct option is (b).

Explanation:

The output power of any object is given by the work done divided by time taken i.e.

$P=\dfrac{W}{t}\\\\P=\dfrac{Fd}{t}$

F is applied force

t is time taken

To increase the power output, the player would need to use a greater force and take less time. Hence, the correct option is (b).