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Duplicate of Physics Forces, Friction, Newtons Laws Flashcards | StudBud
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Duplicate of Physics Forces, Friction, Newtons Laws
Duplicate of Physics Forces, Friction, Newtons Laws
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Physics Forces, Friction, Newtons Laws
Flashcards
30 cards
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Questions
30
Answers
1
The SI unit for acceleration is
ft/sec2
m/s2
Δv/t
mph
2
Which of the following is the tendency of an object to maintain its state of motion?
inertia
acceleration
velocity
force
3
Match the following term with the correct definition: Newton
The metric unit for force
Mass x Gravity due to acceleration (mg)
Force that acts to oppose motion between tow moving objects
The amount of matter in an object
4
Which of the following is the cause of an acceleration or a change in an objects motion?
force
velocity
speed
inertia
5
What causes a moving object to change direction?
inertia
force
acceleration
velocity
6
Match the following term with the correct definition: Newtons Second Law
F=MA
For every force there is an equal & opposite force
7
Match the following term with the correct definition: Mass
Mass x Gravity due to acceleration (mg)
The metric unit for force
Force that acts to oppose motion between two moving objects
The amount of matter in an object
8
A truck exerts a force of 1500 N on a car, accelerating it at 2 m/s
2
. The mass of the car is
750 kg
375 kg
250 kg
1500 kg
9
Match the correct definition with the term Static
The resistance force between surfaces already in motion
The resistance force of a gas/liquid as an object passes
The resistance force between a surface and a rolling object
The force that must be overcome to start an object in motion
10
Match the correct definition with the term Fluid
The resistance force between surfaces already in motion
The resistance force of a gas/liquid as an object passes
The force that must be overcome to start an object in motion
The resistance force between a surface and a rolling object
11
Which of the following statements does NOT describe force?
Force causes objects to stop moving
Force causes objects to start moving.
Force causes objects to change direction
Force causes objects at rest to remain stationary.
12
The normal force
points vertically upward.
acts perpendicular to a surface.
is a scalar quantity.
equals f in magnitude
13
A measure of the quantity of matter is
density
mass
force
weight
14
Whats the difference between mass and weight?
Mass doesn't depend on gravity & weight does
Mass depends on gravity & weight doesn't
There's no difference
They both depend on gravity
15
A change in the force of gravity acting on an object will affect the objects?
weight
inertia
frictional force
mass
16
What are the units of the coefficient of friction?
1/N
N2
N
The coefficient of friction has no units.
17
How much does a 1.0-kg bag of tools weigh?
7.6 N
2.4 N
9.8 N
19.6 N
18
As a 620-N man sits on the floor, the floor exerts a force on him of
620 N
6.2 N
6200 N
1240 N
19
Match the correct definition with the term Rolling
The force that must be overcome to start an object in motion
The resistance force between surface and a rolling object
The resistance force between surfaces already in motion
The resistance force of a gas/liquid as an object passes
20
If a nonzero net force is acting on an object, then the object is definitely
moving with a constant velocity
losing mass
being accelerated
at rest
21
Match the following term with the correct definition: Friction
The amount of matter in an object
Force that acts to oppose motion between tow moving objects
Mass x Gravity due to acceleration (mg)
The metric unit for force
22
A girl pulls on a 9-kg wagon with a constant force of 27 N. What is the wagon's acceleration?
27m/s2
0.3 m/s2
3 m/s2
243 m/s2
23
To determine the force of sliding friction, which of the following is correct?
FF=μFN
FN=μFF
FF=FN/μ
24
Match the correct definition with the term Kinetic or sliding
The force that must be overcome to start an object in motion
The resistance force of a gas/liquid as an object passes
The resistance force between surfaces already in motion.
The resistance force between a surface and a rolling object
25
Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
Action-Reaction Pairs
Net External Forces
Gravitational Forces
Field forces
26
An object weighs 30 N on Earth. A second weighs 30 N on the moon. Which has the greater mass?
the one on the moon
they have the same mass
the one on earth
not enough information to say
27
What is newtons first law?
Law of Interaction
Law of Acceleration
Law of Inertia
28
For every action there is an equal but opposite reaction. Which Newton law is this?
Third
First
Second
29
Which has more mass, a kilogram of feathers or a kilogram of iron?
The iron
Neither they both have the same mass
The feathers
30
Match the following term with the correct definition: weight
The metric unit for force
Force that acts to oppose motion between two moving objects
The amount of matter in an object
Mass x Gravity due to acceleration (mg)
