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CHAPTER THIRTEEN VOCABULARY. FORCES IN MOTION. Velocity. The speed and direction of an object’s motion. Force. A push or a pull that acts on an object. Work. Energy used when a force moves an object. Power. The rate at which work is done. Equilibrium.
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CHAPTER THIRTEEN VOCABULARY FORCES IN MOTION
Velocity • The speed and direction of an object’s motion.
Force • A push or a pull that acts on an object.
Work • Energy used when a force moves an object.
Power • The rate at which work is done.
Equilibrium • The state in which the net force is zero.
Inertia • The tendency of an object to resist a change in motion.
Acceleration • The rate at which the velocity of an object changes over time.
Machine • A device that changes the direction or the amount of effort needed to do work.