Calculate the potential energy of a 20-kg sled at 40 meters.

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.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving