Question

test information
description
instructions from the list of choices, select the one best answer.
multiple attempts not allowed. this test can only be taken once.
force completion this test can be saved and resumed later.
your answers are saved automatically.
question completion status:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
moving to another question will save this response.
question 18
in physics, average power is define as
the product of work done and the time interval
work done divided by displacement
work done divided by the time interval
the product of net force and displacement

Explanation:

The formula for average power \( P \) in physics is \( P=\frac{W}{\Delta t} \), where \( W \) is the work done and \( \Delta t \) is the time interval.

• The first option (the product of work done and the time interval) is incorrect as \( P = W\times\Delta t \) is not the formula for power.
• The second option (work done divided by displacement) gives a quantity related to force (\( F=\frac{W}{d} \) from \( W = Fd\)), not power.
• The fourth option (the product of net force and displacement) is the formula for work (\( W = Fd\)), not power.

Answer:

work done divided by the time interval