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Forces, Newtons Laws & Friction Flashcards | StudBud
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Forces, Newtons Laws & Friction
Forces, Newtons Laws & Friction
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newtons laws and forces
Flashcards
30 cards
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Questions
30
Answers
1
Which of the following is the tendency of an object to maintain its state of motion
velocity
inertia
force
acceleration
2
which of the following is the tendency of an object to maintain its state of motion
acceleration
force
inertia
velocity
3
how much does a 3.0-kg bag of tools weigh
29.4 N
7.2 N
58.8 N
14.4 N
4
A change in the force of gravity acting on an object will affect the object's
weight
frictional force
inertia
mass
5
A force is exerted on the tires of a car to accelerate the car. The force is exerted by the
air
engine
road
tires
6
If a nonzero net force is acting on an object, then the object is definitely
being accelerated
losing mass
moving with a constant velocity
at rest
7
How does acceleration of an object change in relation to its mass? It is
acceleration doesn't depend on mass at all
directly proportional
inversely proportional
8
An object weighs 30N on Earth A second object weighs 30N on the moon which has the greater mass
Not enough information to say
They have the same mass
The one on Earth
The one on the moon
9
A woman stands w 2 feet on a scale, the scale reads 280N. When she lifts 1 foot the scale reads
280 N
less than 280 N
more than 280 N
10
for every action there is an equal but opposite reaction is which of his laws of motion?
second
third
fourth
first
11
which are simultaneous equal but opposite forces resulting from the interaction of two objects
field forces
gravitational forces
net external forces
action-reaction pairs
12
what causes a moving object to change direction
inertia
velocity
force
acceleration
13
A woman weighing 550 N sits on the floor. She exerts a force on the floor of
5.5 N
5500 N
550 N
55 N
14
which of the following is the cause of an acceleration or a change in an objects motion?
velocity
force
inertia
speed
15
a measure of the quantity of matter is
density
mass
force
weight
16
Forces always occur
in pairs
by themselves
in triplets
as single quantities
17
As a 600-N woman sits on the floor, the floor exerts a force on her of
1200 N
6 N
600 N
6000 N
18
A bag of sports equipment has a mass of 10.0 kg and a weight of
9.8 N
980 N
98 N
0.98 N
19
The normal force
points vertically upward
acts perpendicular to a surface
is a scalar quantity
20
A tow truck ecerts a force of 3000N on a car. accelerating at 1.5 m/s/s. What is the mass?
1000 kg
none of the above
3000 kg
2000 kg
21
compared to its weight on Earth, a 10-kg object on the moon will weigh
the same amount
less
more
22
An apple weighs 1 N. The net force on the apple when it is in free fall is
1 N
None of the above
0 N
9.8 N
23
The force required to maintain an object at a constant speed in free space is equal to
zero
the force required to stop it
the weight of the object
the mass of the object
24
One object has twice as much mass as another object. The first object also has twice as much
gravitational acceleration
all of the above
Inertia
velocity
25
what are the units of the coefficient of friction
1/N
N
The coefficient of friction has no limit
26
a girl pulls on a 10-kg wagon with a constant of 20 N. What is the wagons acceleration
2 m/s2
200 m/s2
20 m/s2
0.5 m/s2
27
According to Newtons third law, if you push gently on something, it will push
gently on something els
on you only if you aren't moving
gently on you
on something only under the right conditions
28
a measure of the quantity of matter is
weight
force
mass
density
29
You would have the largest mass of gold if your chunk of gold weighed 1 N on
Jupiter
The moon
Earth
30
How much does a 3.0-kg bag of bolts weigh?
58.8
29.4
7.2
14.4
