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?

Answer 1

Power;P = 1372000 W

Step-by-step 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