What is energy?
O
A. A form of sound
O
B. The ability to do work
O
c. The number of atoms in an object
O
D. The size of an object

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine