Chapter 19 vocab Flashcards Preview

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Flashcards in Chapter 19 vocab Deck (21)
1

motion

when an object changes position over time relative to a reference point

2

delta

change

3

reference point

The object that appears to stay in place, or an arbitrary point on an object used to establish its position

4

distance

How far an object travels from an initial position to a final position

5

Inital position

The position that an object starts at±

6

final position

The position that an object ends at

7

speed

The distance traveled divided by the time interval during which the motion occurred

8

velocity

the speed of an object in a particular direction.

9

acceleration

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

10

position

The location of an object in relation to a reference point

11

Force

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

12

Newton

The SI unit for force; 1 N = an object weighing 1kg accelerating at the rate of 1 meter per second

13

Net force

the combination of all of the forces acting on an object

14

Balanced force

when the forces on an object produce a net force of 0N

15

Friction

a force that opposes motion between 2 surfaces that are in contact.

16

Static friction

when a force is applied to an object but does not cause the object to move.

17

Kinetic friction

Friction between 2 surfaces

18

Gravity

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

19

Weight

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

20

Mass

a measure of the amount of matter in an object.

21

Unbalanced force

When the forces on an object do not add up to 0N