Power in physics is: how very difficult the work feels in your body.
how much total energy is used.
how fast a mass is moved.
how much muscle you have.

Why is metal often used for cooking pan?

Describe uniform velocity and variable velocity in short

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?