Question

It takes 400 J to go up some stairs in 2 seconds. Which of these correctly describes power and energy for this action?

A) 400 J of energy were converted into some other energy, and 200 watts of power were needed.
B) 200 watts of energy were converted into some other energy, and 400 J of power were needed.
C) 200 J of energy were converted into some other energy, and 800 watts of power were needed.
D) 400 J of energy were converted into some other energy, and 800 watts of power were needed.

I know that Power= work (divided by) time, but im not sure what the equation for energy is. But I think the answer is A)400 J of energy were converted into some other energy, and 200 watts of power were needed.

Answer 1

C) 200 J of energy were converted into some other energy, and 800 watts of power were needed. is the answer

Answer 2

Answer:

A) 400 J of energy were converted into some other energy, and 200 watts of power were needed.

Explanation:

Just took the test and I tried C n it was wrong :3