Watson walks up the stairs on his way to class. He weighs 785 N, and the stairs go up 4.75 m vertically. What is his power output if he climbs the stairs in 11.5 s?

Remember to list given values, formula (s), calculations, final answer with the correct unit and correct number of significant figures.

(I already solved it but I wanted to make sure I was correct because my grade is suffering.) I got (Using the formula P=W/t) 1067.6 ft-N/s. I will post my work if you need me to.

Question

Physics

Snow

10 June, 12:35

Watson walks up the stairs on his way to class. He weighs 785 N, and the stairs go up 4.75 m vertically. What is his power output if he climbs the stairs in 11.5 s?

Remember to list given values, formula (s), calculations, final answer with the correct unit and correct number of significant figures.

(I already solved it but I wanted to make sure I was correct because my grade is suffering.) I got (Using the formula P=W/t) 1067.6 ft-N/s. I will post my work if you need me to.

+3

Answers (1)

Know the Answer?

Tyshawn Mckee · Answer 1

324.2 watts

Explanation:

Power = energy / time

P = w / t

W = force x distance

So power (p) = f x d / t

= 785 x 4.75 / 11.5

= 3728.75/11.5

= 324.2 watts