Book 2 Chapter 1 science vocab 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

acceleratoin

A

the rate at which velocity changes over time; an object accelerates if its speed, direction, or bot 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 size and direction

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6
Q

newton

A

the SI unit for force (symbol, N)

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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 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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