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Cards In This Set
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Define Gravity
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The force that pulls falling objects toward each other
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Define Free-fall
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The motion of a falling object when the only force acting on it is gravity.
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Define air resistance
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The fluid friction experienced by objects falling through the air.
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Define mass
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The amount of matter in an object
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Define projectile (motion)
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The term for an object that is thrown
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Define Weight
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The force of gravity on an object
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Define Inertia
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The tendency of an object to resist changes in its motion
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Define momentum
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The product of an object’s mass and velocity.
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Terminal Velocity
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The term for the greatest velocity a falling object can
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What is the speed at which all objects accelerate toward the Earth when there is no air resistance?
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9.8 m/s/s
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What slows down the acceleration of falling objects?
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Air resistance (fluid friction)
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Describe how weight is affected by changes in gravity.
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As gravity increases weight increases, as gravity decreases weight decreases
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Describe how mass is affected by changes in gravity.
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Mass remains constant even though gravity changes
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What two factors affect gravitational forces between two objects.
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Mass of objects and the distance away from each other
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If objects of the same size and shape, but different masses are dropped from the top of a building. Will they land at the same time or at different times? Explain your answer.
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They will land at the same time. All objects accelerate in the absence of air resistance at 9.8 m/s/s.
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