Chapter 1 Flashcards

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1
Q

Motion

A

an objects change in position relative to a reference point

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2
Q

Speed

A

the distance traveled divided by the time interval during which the motion occured

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3
Q

Velocity

A

the speed of an object in a particular direction

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4
Q

Acceleration

A

the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change

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5
Q

Force

A

a push or a pull exerted on an object in order to change the motion of the object; force has a size and direction

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6
Q

Newton

A

the SI unit for force

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7
Q

Net force

A

the combination of all of the forces acting on an object

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8
Q

Friction

A

a force that opposes motion between two surfaces that are in contact

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9
Q

Gravity

A

a force of attraction between objects that is due to their masses

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10
Q

Weight

A

a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe

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11
Q

Mass

A

a measure of the amount of matter in an object

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