Work, Power, and Energy

On day one I ran a 5k in 20 minutes. On Day 2 I ran a 5k in 16 minutes. On day 3 I ran a 5k in 25 minutes. On which day did I do the most work?

The unit for work is

A. You jog very slowly, very easily for 3 miles, and feel fine.

B. You sprint as fast as you can for 1 mile, and are very tired after.

Have you done more work in A. or B. ?

The rate at which work is done is known as:

The unit for power is

Person A, Person B, and Person C pushed the same object the same distance. Person A did it in 10 seconds, Person B in 20 seconds, and Person C in 25 seconds. Who applied the most power to the object?

If 200J of work is done in 20seonds, what is the power?

What kind of energy does an object have sitting motionless on a bookshelf?

if a new book of the same weight as the book in the previous question was sitting one shelf higher on the same book case, which book has more potential energy?

What 3 things are used to find potential energy