Topic 4 test Flashcards

1
Q

Force

A

Push or Pull

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2
Q

newton

A

the strength force is
measured

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3
Q

friction

A

the force 2 objects
exert on each other
when the move over
each other

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4
Q

inertia

A

*the resistance
to change in
motion

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5
Q

net force

A

the combination
of all the forces
on a object

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6
Q

balanced force

A

does not change
the position of
an object

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7
Q

unbalanced force

A

*changes the
position of an
object

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8
Q

motion

A

when an
object changes
position

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9
Q

contact force

A

a force that is applied
when 1 object touches
another object

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10
Q

noncontact force

A

a force that is applied
to an object whether it
touches the object or
not.

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11
Q

Which Law?
*An objects acceleration
depends its mass and
force acting on it

A

2nd Law

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12
Q

Which Law?
*An object will not
change position unless
an unbalanced force is
applied.

A

1st Law

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13
Q

Which Law?
*For every action
there is an equal and
opposite reaction.

A

3rd Law

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14
Q

What are the
four types of
friction

A

Rolling, static,
fluid and sliding

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15
Q

What type of friction is
the bird flying in air

A

Fluid

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16
Q

What type of friction is
a cat laying on a floor

A

static

17
Q

A car is driving South at
30 mph. Is this an
example of speed,
velocity or acceleration?

A

velocity

18
Q

Any time you change the
motion of an object, you
use a force.

A

True

19
Q

What 2 factors describe a
force?

A

Strength and Direction

20
Q

A balanced force is
needed to change an
object’s motion

A

false

21
Q

What is the net force
being applied to the
box, when both arrows that are 10n are going right.

A

20 N Right

22
Q

What is the net force
being applied to the
box when 20 N are going seperate ways?

A

0 N

23
Q

Mass, weight, or
gravity?
*a measure of the
force of gravity on
an object

A

weight

24
Q

Mass, weight, or
gravity?
*a measure of
amount of matter
in an object

A

Mass

25
Q

a force the pulls
objects towards each
other as a result of
their masses

A

gravity

26
Q

Speed, acceleration, or
velocity?
*speed with a
specific
direction

A

velocity

27
Q

Speed, acceleration, or
velocity?
*the distance an
object travels in a
given amount of time

A

Speed

28
Q

Speed, acceleration, or
velocity?
*a change in
velocity

A

acceleration

29
Q

Decrease, Increase, Stay the
Same?
*If you increase the mass on an
object, then the acceleration
will

A

Decrease

30
Q

True or False
*When 2 objects collide the
same amount of force
applied in the action of the
force.

A

True

31
Q

A cat speeds up to pass
another cat in a cat
race. Is this speed,
velocity or acceleration?

A

acceleration

32
Q

___________ and
____________ are the 2
factors that effect the
gravitational attraction
between objects.

A

Mass AND Distance

33
Q

How are
forces
classified?

A

Contact and
noncontact