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Physics Laws of motion Flashcards | StudBud
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Physics Laws of motion
Physics Laws of motion
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Physics Review
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Answers
1
When you kick a ball your foot hurts.
1st law
3rd law
2nd law
2
When the pull of gravity equals the push up of air resistance
Newton
terminal velocity
force
inertia
3
A force that occurs through touching
velocity
inertia
contact force
long range force
4
When there is an object in motion the force are
balanced
really high
non-existent
unbalanced
5
Fluid friction never produces heat.
false
true
6
The entire path an object follows
distance
direction
Displacement
area
7
Force that occurs without touching
long range force
inertia
contact force
velocity
8
A person going down a slide is an example of
static friction
fluid friction
rolling friction
sliding friction
9
This is the formula for speed
Distance/Time
Displacement/Time
Force=Mass x Acceleration
Vf - Vi/time
10
The force that works against forward motion
mass
inertia
fricition
weight
11
The amount of inertia an object has is based on
Object's mass
object's weight
object's force
objects speed
12
When an object slows down, it is not accelerating.
true
false
13
The time it takes an object to travel a certain distance
speed
distance
velocity
displacement
14
When someone stops your feet, you fall
2nd law
3rd law
1st law
15
Water skiing is an example of
rolling friction
sliding friciton
static friction
fluid friction
16
An object speeding up, slowing down or changing direction is
speed
velocity
force
acclerating
17
This is the formula for acceleration
Vf - Vi/Time
Distance / Time
Displacement/Time
Force = Mass x Acceleration
18
The formula for Velocity is
Force = Mass x Acceleration
Displacement/Time
Distance /Time
F speed-I speed/time
19
The faster an object is moving the more force it has
false
true
20
When you go to the moon, your mass changes because the moon’s gravity is less.
false
true
21
Throwing a bullet at a target causes much less destruction than shooting a bullet at a target
2nd law
1st law
3rd law
22
When a feather and a hammer are dropped at the same time on EARTH
feather hits first b/c it reaches terminal velocity first.
both hit at the same time
the feather hits first because it has less mass
hammer hits first because the feather hits t. velocity 1st
23
When an object reaches terminal velocity, the object
speeds up
slows down
stops speeding up
dies
24
When a car stops suddenly and you keep going through the windshield.
2nd law
3rd law
1st law
25
When a gun is fired, the gun “kicks” in your hand.
3rd law
1st law
2nd law
26
The speed and direction of an object
speed
distance
velocity
displacement
27
Standing still on a hill is an example of
rolling friction
static friction
fluid friction
sliding friciton
28
Speed that stays the same (cruise control)
constant speed
crazy speed
what the heck?
dancing
29
A push or a pull is
force
speed
inertia
velocity
30
When you drop a feather and a hammer on Earth, the hammer hits first because it’s the heaviest.
true
false
31
An object with less mass, has more inertia.
false
true
32
The unit for acceleration is
seconds
m/s
meters
m/s2
33
An example of a long range force
all of these
magnetism
gravity
electricity
34
Figuring out whether or not an object is in motion by looking at objects that are NOT moving
distance
karate
relative motion
displacement
35
The difference between speed and velocity, is that speed includes direction.
true
false
36
A push or a pull is
acceleration
force
gravity
speed
37
This is the unit for speed
meters
centimeters
seconds
m/s
38
An object falling with a higher mass, will hit with more force.
false
true
39
When there is NO movement the forces are
non-exsitent
unbalanced
really high
balanced
40
When you turn a door knob on Earth the only reason you don’t turn is because of static friction
3rd law
2nd law
1st law
41
The shortest route between in two points with direction
distance
displacement
area
direction
42
When you exert a force on an object, that object exerts the same amount of force on you
true
false
43
When a someone pulls a tablecloth out from underneath objects like dishes
1st law
3rd law
2nd law
44
An object at rest wont move; an object in motion will keep moving unless acted upon by a force
inertia
speed
force
velocity
45
An object with a _______ will reach terminal velocity faster than a object with a_____________
small mass; large mass
large mass; small mass
small surface area; big surface area
big surface area, small surface area
46
An object in motion wants to remain in motion, and an object at rest wants to remain at rest
unbalanced
inertia
balanced forces
gravity
47
A car tire rolling down the road is an example of
sliding friction
static friciton
fluid friction
rolling friction
48
A car on cruise control is an example of constant speed.
true
false
49
A golf ball and a bowling ball are dropped, the bowling ball drops with more force
2nd law
1st law
3rd law