Topic 4 test Flashcards
Force
Push or Pull
newton
the strength force is
measured
friction
the force 2 objects
exert on each other
when the move over
each other
inertia
*the resistance
to change in
motion
net force
the combination
of all the forces
on a object
balanced force
does not change
the position of
an object
unbalanced force
*changes the
position of an
object
motion
when an
object changes
position
contact force
a force that is applied
when 1 object touches
another object
noncontact force
a force that is applied
to an object whether it
touches the object or
not.
Which Law?
*An objects acceleration
depends its mass and
force acting on it
2nd Law
Which Law?
*An object will not
change position unless
an unbalanced force is
applied.
1st Law
Which Law?
*For every action
there is an equal and
opposite reaction.
3rd Law
What are the
four types of
friction
Rolling, static,
fluid and sliding
What type of friction is
the bird flying in air
Fluid
What type of friction is
a cat laying on a floor
static
A car is driving South at
30 mph. Is this an
example of speed,
velocity or acceleration?
velocity
Any time you change the
motion of an object, you
use a force.
True
What 2 factors describe a
force?
Strength and Direction
A balanced force is
needed to change an
object’s motion
false
What is the net force
being applied to the
box, when both arrows that are 10n are going right.
20 N Right
What is the net force
being applied to the
box when 20 N are going seperate ways?
0 N
Mass, weight, or
gravity?
*a measure of the
force of gravity on
an object
weight
Mass, weight, or
gravity?
*a measure of
amount of matter
in an object
Mass
a force the pulls
objects towards each
other as a result of
their masses
gravity
Speed, acceleration, or
velocity?
*speed with a
specific
direction
velocity
Speed, acceleration, or
velocity?
*the distance an
object travels in a
given amount of time
Speed
Speed, acceleration, or
velocity?
*a change in
velocity
acceleration
Decrease, Increase, Stay the
Same?
*If you increase the mass on an
object, then the acceleration
will
Decrease
True or False
*When 2 objects collide the
same amount of force
applied in the action of the
force.
True
A cat speeds up to pass
another cat in a cat
race. Is this speed,
velocity or acceleration?
acceleration
___________ and
____________ are the 2
factors that effect the
gravitational attraction
between objects.
Mass AND Distance
How are
forces
classified?
Contact and
noncontact
