Forces and Motion

Question 1

what is a force

Answer 1

a push or a pull

Question 2

what can you measure forces with

Answer 2

spring scales

Question 3

total amount of force acting on an object

Answer 3

net force

Question 4

when the net force is 0 their is a __ force

Answer 4

balanced

Question 5

when an object accelerates their are ___ forces

Answer 5

unbalanced

Question 6

a force that opposes motion between two objects that are touching.

Answer 6

frictionn

Question 7

friction causes __ acceleration

Answer 7

negative

Question 8

True or False
friction effects every object on earth

Answer 8

true

Question 9

friction between 2 surfaces that are not moving past each other

Answer 9

static friction

Question 10

friction caused by two surfaces sliding past each other

Answer 10

sliding friction

Question 11

friction between a rolling object and the surface it rolls on

Answer 11

rolling friction

Question 12

friction that is caused but the motion of an object through a fluid

Answer 12

Fluid friction

Question 13

fluid friction is a __ or a __

Answer 13

gas or liquid

Question 14

the force of attraction between all objects

Answer 14

gravity

Question 15

gravity causes objects to accelerate ____-

Answer 15

downward

Question 16

any two massas exert an ____ force on each other

Answer 16

attractive

Question 17

the strength of the force depends on the ___ of the object and the ___ between them

Answer 17

mass - distance

Question 18

the gravitationa force exerted on an object

Answer 18

weight

Question 19

weight is not the same as ___

Answer 19

mass

Question 20

as long as an object is ____ ____ nothing exerts an upward force on it, causing ___

Answer 20

free falling - weightlessness

Question 21

if the earth had no air then objects would fall at the ____ ___

Answer 21

same rate

Question 22

acceleration caused by gravity is? (called g force)

Answer 22

9.8m/s/s

Question 23

a force that opposes motion of an object through air

Answer 23

air resistance

Question 24

fluid friction __ as an objects speed ___.

Answer 24

increases- increases

Question 25

the amount of air resistance on an object depends on the ..

Answer 25

speed, size, and shape of an object

Question 26

as an object falls it

Answer 26

accelerates

Question 27

as an object falls faster, the force of air resistance ___

Answer 27

increases

Question 28

maximum speed at witch an object can fall

Answer 28

terminal velocity

Question 29

Newtons First Law

Answer 29

an object at rest stays at rest and an object in motion will stay in motion until an outside force causes it to stop

Question 30

Newtons second law

Answer 30

says that force, mass , and acceleration are all connected

Question 31

the acceleration of an object is determined by the

Answer 31

size of the net force and the mass of an object

Question 32

equation for net force is

Answer 32

F= ma

Question 33

force is measured in

Answer 33

newtons

Question 34

For every action force, their is an opposite and equal reaction force

Answer 34

Newtons 3rd law