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Vocabulary Owen Graham
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Force Definition-A push or pull Sentence-A truck exerts force on a car
Key word-work
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Newton Definition-SI unit of force
Sentence-A gear exerts newtons on other cogs Key word-force
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Net Force Definition-The combination of all forces acting on an object
Sentence-the books net force -2 newtons Key word-force
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Unbalanced Forces Definition-whenever there is a net force acting on an object the forces are unbalanced Sentence-there are unbalanced forces acting on the rocket Key word-thrust
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Balanced Forces Definition-Equal forces acting on one object
Sentence-there are balanced forces acting on the book Key word-net force
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Friction Definition-the force that two surfaces exert on each other when they rub against each other is called friction Sentence-the block is undergoing friction Key word-resistance
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Static Friction Definition- The friction that acts on objects that are not moving. Sentence- Static Friction is acting on the yellow block Key Word- not moving
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Sliding Friction Definition-occurs when two solid surfaces slide over each other. Sentence-Sliding friction is exerted on the blocks. Key word-Resistance
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Rolling Friction Definition- A force which opposes the motion of any body that is rolling over the other. Sentence- The grey block is undergoing rolling friction Key word-Resistance
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Fluid Friction Definition- Resistance to an objects motion through a liquid Sentence- The yellow block is undergoing fluid friction Key word- Resistance
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Gravity Definition- Gravity is a force that pulls objects towards one another. Sentence- The moon is caught in the earth’s gravity. Key word- Pull
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Mass Definition- The measure of the amount of matter in an object.
Sentence- Atoms have very little mass. Key word- size
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Weight Definition- The force of gravity on a person or object on the surface of a planet. Sentence- The 3lbs. Weight has a high weight.(not really) Key word- Heavy
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Free Fall Definition- When the only force acting on an object is gravity an object is said to be in free fall. Sentence-The whale is in free fall. Key word- Falling
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Air Resistance Definition- A type of fluid friction.
Sentence- The car is experiencing air resistance. Key word- friction
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Terminal Velocity Definition- The greatest velocity an object reaches is called Terminal velocity. Sentence-The ball has reached terminal velocity. Key word- Speed
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Projectile Definition- An object that is thrown.
Sentence-The vomit is a projectile. Key word-Thrown
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Inertia Definition-An object’s resistance to a change in motion.
Sentence- The large stone’s inertia resisted a change in motion. Key word-Still
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