A790n person runs up a flight of 40 stairs (.25m for each step) in 20 seconds, and then down 10 steps in 5 seconds. how much total mechanical work is completed? how much total mechanical power is generated? show all work.

A person runs up 40 stairs and then come down 10 steps

So total stairs upwards is given as

now here we will have total height reached

Now total energy used or mechanical work done is

Now the mechanical power is given as

2b2t

explanation:

2b2t