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.

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

What is a possible result of higher air temperature caused by global warming