Physical Science: C8-Motion & Forces
Terms
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- The distance traveled divided by the time interval in which the motion occurred.
- What is Speed? (252)
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A quantity defined as the product of an object's mass and its velocity. (P=MV)
P = mass x velocity. - What is Momentum? (256)
- A quantity describing both speed and direction.
- What is Velocity? (254)
- The change in velocity divided by the time interval in which the change occurred.
- What is Acceleration? ((259)
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The cause of acceleration, or change in
object's velocity. - What is Force? (262)
- The forces acting on an object that combine to produce a net force equal to zero.
- What are Balanced Forces? (263)
- The forces acting on an object that combine to produce a net nonzero force.
- What are Unbalanced Forces? (263)
- The force between two objects in contact that opposes the motion of either object.
- What is Friction? (265)
- The attraction between two particles of matter due to their mass.
- What is Gravity? (266)
- The tendency of an object to remain at rest or in motion with a constant velocity.
- What is Inertia? (269)
- The motion of a body when only the force of gravity is acting on it.
- What is a Free Fall? (271)
- The maximum velocity reached by a falling object in that occurs when the resistance of the medium is equal to the force of gravity.
- What is Terminal Velocity? (272)
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An object at rest remains at rest and an object in motion maintains a constant velocity unless it experiencs
an unbalanced force. Also known as the Law of Inertia. - What is Newton's 1st Law of Motion (LOM)
- For every action force, their is an equal and opposite reaction force.
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What is Newton's 3nd Law of Motion?
(268) - The unbalanced force acting on an object equals the objects' mass times its acceleration, or (F=ma)
- What is Newton's 2nd Law of Motion? (269)
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The SI unit of force. Weight equals the mass times free fall acceleration or
(W = mg) - What is the Newton? (270)
- This scientist explained the relationship between motion and force in three laws of motion.
- Who was Sir Isaac Newton? (268)