What is the potential energy of a 900 kg rock positioned on a cliff 30 m above the ground?

A book has a mass of 50 grams and an acceleration of 5 m/s/s. What is the force on the book?

Claudia goes bungee jumping. She has a mass of 51kg. The bungee cord will stretch 5m when a force is applied to it. What is the spring constant of the bungee cord?

Current enters a circuit at a: 1. positive terminal 2. negative terminal 3. low potential side 4. resistor

A ramp is a simple machine called the a. wedge b. pulley c. inclined plane d. lever

Which best compares the particles of the substance when it is in region 1 with the particles of the substance when it is in region 3? The particles are slower in region 3. The particles are more orderly in region 1.

What are the main activities involved in studying physics?

What is the energy that moves your arms and legs

A moving object can be in equilibrium. Explain.

If gravity puts a force of 3N an object, how much force would it put on an second object that was twice as heavy

Where did the asteroids in the asteroid belt come from?