What Causes Objects To Move Or Stop Moving

Front 1

force

Back 1

a push or a pull

Front 2

gravity

Back 2

the force of attraction that exits between any two objects

Front 3

mass

Back 3

the amount of matter in an object

Front 4

weight

Back 4

a measure of the pull of gravity on an objects mass

Front 5

newton

Back 5

in the metric system the unit used to measure force or weight

Front 6

net force

Back 6

the combination of all the forces acting on an object

Front 7

balanced forces

Back 7

equal forces acting in opposite directions

Front 8

three examples of force

Back 8

a magnet, a sailboat a tennis ball

Front 9

relative motion

Back 9

the change in position of one object compared to the position of another

Front 10

frame if reference

Back 10

the object an observer uses to detect motion

Front 11

displacement

Back 11

the direction and shortest distance traveled during a change of position

Front 12

distance

Back 12

the total length of the path between two points

Front 13

speed

Back 13

the distance an object moves in a certain period of time

Front 14

instantaneous speed

Back 14

the speed at any given point

Front 15

speedometer

Back 15

a device that shows instantaneous speed

Front 16

velocity

Back 16

measure of both the speed and direction of a moving object

Front 17

acceleration

Back 17

the change in velocity during a particular time period

Front 18

three types of motion

Back 18

vibrational, circular, straight line

Front 19

difference between speed and velocity

Back 19

+ Speed is the distance travelled by an object in a particular time.
+ Velocity is the speed in a particular direction.

Front 20

three ways an object can accelerate

Back 20

speed up, slow down, change direction

Front 21

law

Back 21

a statement that describes events or relationships that exist in nature

Front 22

inertia

Back 22

the resistance of an object to change in its state of motion

Front 23

friction

Back 23

a force between surfaces that resists the movement of one surface past the other surface

Front 24

air resistance

Back 24

the friction from air molecules htting an object as the object moves through the air

Front 25

newtons 1st law

Back 25

all objects resist changes in motion

Front 26

newton 2nd law

Back 26

an objects acceleration depends on the mass of the object and the size and direction of the force acting on it

Front 27

2nd law written as equation

Back 27

force= mass x acceleration

Front 28

speed written as equation

Back 28

speed= distance - time

Front 29

newtons 3rd law

Back 29

when on object exerts a force upon a second object, the second object exerts an equal and opposite force upon the first object.