book 2. chapter 1 Flashcards Preview

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Flashcards in book 2. chapter 1 Deck (11):
1

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

gravity

2

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

weight

3

a measure of the amount of matter in an object

mass

4

an object's change in position relative to a reference point

motion

5

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

speed

6

the speed of an object in a particular direction

velocity

7

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

acceleration

8

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

force

9

the SI unit for force

newton

10

the combination of all of the forces acting on an object

net force

11

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

friction