CHAPTER THIRTEEN VOCABULARY - PowerPoint PPT Presentation

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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

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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.