QUESTIONS A 800 kg person sprints up a 700 meter high stairway in 4.00 seconds flat. What is their power output in watts?

Question

QUESTIONS

A 800 kg person sprints up a 700 meter high stairway in 4.00 seconds flat. What is their power output in watts?

in progress 0
Kim Cúc 5 years 2021-07-18T15:36:22+00:00 1 Answers 17 views 0

Answers ( )

  1. Xavia
    0
    2021-07-18T15:38:11+00:00
    Reply

    Answer:

    Power;P = 1372000 W

    Explanation:

    We are given;

    Mass of person;m = 800 kg

    Distance sprinted;h = 700m

    Time taken;t = 4 seconds

    Now, the formula for Power is;

    Power = Work done/Time taken

    Where work done = Force x Distance

    Now, Force is expressed as;

    F = mg

    Where m is mass and g is acceleration due to gravity = 9.8 m/s²

    Thus, plugging in the relevant values into power equation gives;

    Power;P = 800 x 9.8 x 700/4

    Power;P = 1372000 W

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )