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Unit 8 Science Vocab

QuestionAnswer
Motion an object's change in position relative to a reference point
Frame of Reference a system for specifying the precise location of objects in space and time
Displacement the change in position of an object
Speed the distance traveled divided by the time interval during which the motion occurred
Velocity the speed of an object in a particular direction
Acceleration the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
Force an action exerted on a body in order to change the body's state of rest or motion; force has magnitude and direction
Friction a force that opposes motion between two surfaces that are in contact
Static Friction the force that resist the initiation of sliding motion between two surfaces that are in contact and at rest
Kinetic Friction the force that opposes the movement of two surfaces that are in contact and are moving over each other
Inertia the tendency of an object to resist a change in motion unless an outside force acts on an object
Weight a measure of the gravitational force exerted on an object
Free Fall the motion of a body when only the force of gravity is acting on the body
Terminal Velocity the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
Projectile Motion the curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth
Momentum a quantity defined as the product of the mass and velocity of an object
Created by: haleylorenson
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