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24 Cards in this Set
- Front
- Back
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Force
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A push or pull that changes the motion, size, or the shape of a body or substance.
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Newton
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The unit of force.
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Contact forces
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Forces that require contact between 2 objects or substances.
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Buoyant force
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The upward force exerted on objects in a fluid.
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Elastic force
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A force that acts to pull a stretched object back into its regular shape.
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Friction
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A force that resists motion in 2 objects that are moving against each other.
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Compressional force
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A force that results from pushing or squeezing an object.
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Tensile force
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A force that results from a pull exerted on an object. Ex. A rope in tug-o-war.
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Shearing force
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A force that distorts material by slippage along a plane parallel to the force.
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Non-contact forces
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Forces which don't require contact between 2 objects.
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Net force
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A total of all the forces acting on an object.
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Speed
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The rate at which objects move.
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Velocity
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The speed of an object in a particular direction.
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Acceleration
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The rate of change in velocity over time.
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Inertia
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The tendency of an object to resist a change in its movement.
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Terminal Velocity
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The constant velocity after which an object stops accelerating.
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Projectile Motion
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The curved path an object follows when its thrown or propelled near the earth's surface.
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Centripetal force
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The force that continuously pulls objects traveling in a circular path toward the center of the circle.
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Centripetal acceleration
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The change in velocity of an object traveling in a circular path.
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Fluid
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Any substance that flows & takes up the shape of its container.
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Momentum
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The property of a moving object that depends on its mass & velocity.
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Pressure
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Force per area.
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Hydraulic power
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Devices that use liquids to transfer pressure from one point to another.
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Pneumatic power
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Devices that use air to transfer pressure from one point to another.
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