It took 3.3 s for a student to move a 6.4 N chair a distance of 10.7 m. How much power did she use?

Question

Physics

Seth Horn

15 July, 19:01

It took 3.3 s for a student to move a 6.4 N chair a distance of 10.7 m. How much power did she use?

+3

Answers (1)

Know the Answer?

Manuel Brandt · Answer 1

= 20.75 Watts or 20.75 J/s

Explanation:

Power is given by the formula;

Power = work done/time

But; work done = Force * distance

Therefore;

Work done = 6.4 N * 10.7 m

= 68.48 Nm

Thus;

Power = 68.48 Nm / 3.3 s

= 20.75 Watts or 20.75 J/s