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WorksheetsPhysics finals
Total questions: 145
Worksheet time: 1hrs 14mins
which law is this? Whenever one object exerts a force on a second object, the second object exerts and equal and opposite force on the first object.
newtons 2nd law
Law of conservation of energy
Newtons 3rd law
Newtons 1st Law
Newton said that a force is not a thing in itself but a____ Between one thing and another
Object
Force
Interaction
Reaction
A force that first acts on an object is a
Action force
Reaction force
opposite force
None
When I cannonball is shot from a canon the kick back of the canon is the result of the
Action force
Reaction force
air
I canon does not kick back as far as the ball is shot from it because
It has more mass
It has less force
it has more force
What is the force that pushes air out of a balloon
1. Air outside the balloon
2. The balloon
3. Air pressure in the balloon
Both two and three
The evidence that the moon is pulling on the earth can be seen by
volcanoes
Tsunamis
The tides
A decrease in gravity
What force acts on a horse that pulls a cart
The ground
The horses hoof
The cart
None of these
The force in an action force depends on the (may have more than one)
Mass of the reaction force
The speed of the action force
The speed of the reaction force
The person who jumps up from their earth does not see the opposite reaction force of the earth because
It happens too fast
It’s too small to be seen
It doesn’t happen
The earth is too big
The lift a flying birds an aircraft is caused by
Their speed
Pushing up of the air on their wings
Hot air rising
Less gravity at altitude
The action force that results in Lift and birds And aircraft is
Downward pushing of air
Gravity
Forward movement
None
The first object acting on the second object
Action force
Reaction force
The second object acting on the first
Action force
Reaction force
Which law is this? The acceleration produced by a net force on an object is directly proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object.
Newtons 1st law
Newtons 2nd law
Newtons 3rd law
Law of conservation of energy
Acceleration
Force/mass
Force•distance
Mass•acceleration
Acceleration depend on the _____ to increase the acceleration of an object
Mass
Speed
Net force
Distance
Which are fluids
Liquids
Solids
Gases
rocks
the friction acting on something moving through air, is a very common form of fluid friction
speed
air resistance
terminal speed
Terminal velocity
newton per square meter
watts
Grams
Kilogram
Pascals
if you drop two objects with different masses from the same height which will hit the ground first
heavier
lighter
same time
action and redaction force are _____ and ______
different, together
equal, opposite
equal, together
if you push on something it…
push’s back
moves away
gets damaged
Inertia in motion
Impulse
Speed
Momentum
truck
momentum
Mass•velocity
Force/mass
Mass•speed
Mass/speed
Change in momentum
Impulse
Force
work
Energy
What causes acceleration?
Speed
Impulse
Force
Outside force
The greater the _____ acting on an object, the greater it’s change in ____
Mass, direction
Force, direction
force, mass
Force, velocity
Impulse
Force/mass
Mass•speed
Force•time interval
Force/time interval
what is it called when momentum or any quantity in physics done not change
Unchanged
conservative
Conserved
Untouchable
which law is this? In the absence of an external force, the momentum of a system remains unchanged
Newtons 1st law
Law of conservation of momentum
Law of conservation of energy
Newtons 3rd law
Net momentum is always…
Different
equal
whenever colliding objects become tangled or couple together
Elastic collision
Inelastic collision
When objects collide without being permanently deformed and without generating heat
Inelastic collision
Elastic collision
work
Force•distance
Force/distance
Length•width
Force•mass
Unit for work
watt
Pascal
Newton
Joule
the rate at which work is done
Power
Effort
Time
Speed
Power
Mass•velocity
Work/time
Work•time
Mass/velocity
The energy due to the position of something or the movement of something
Energy
Mechanical energy
Kinetic energy
Chemical energy
Something that enables an object to do work
Force
Work
Energy
Effort
energy that is stored and held in readiness
Kinetic energy
Potential energy
Energy
Mechanical energy
Gravitational potential energy
Weight•height
Mass•velocity
Rate•time
The potential energy due to elevated positions
Kinetic energy
Energy
Gravitational potential energy
Energy in motion
Potential energy
Gravitational potential energy
Kinetic energy
Mechanical energy
Kinetic energy
1/2 mass•speed ^2
Mass •speed^2
1/2 mass •speed
Which law is this? Energy cannot be created or destroyed. It can only be transformed from one form into another, but the total amount of energy never changes
Law of conservation of energy
Law of momentum
Newtons 3rd law
Newtons 2nd law
A device used to multiply forces or simply to change the fire toon of forces
Yourself
Lever
Lever arm
Machine
The ration of output forces to input forces for a machine
Mechanical advantage
Load
Velocity
Mechanical change
A lever used to change direction of a force
Fulcrum
Lever arm
Pulley
Lever
Efficiency
Useful work output/total work inout
Weight•height
Mass • velocity
Newton said that a force is not a thing in itself but a …
Object
Force
Interaction
Reaction
A force that acts first on a object is called…
Action force
Reaction force
Air
A common does not kickback as far as the ball is shot from it because
It has more mass
Is gas less force
It has more force
Which two are forces that push air out of a ballon
Air outside the balloon
The balloon
Air pressure in the balloon
the evidence that the moon is pulling on the earth can be seen in
A decrease in gravity
The tides
The tsunamis
Volcanoes
What force acts on a horse that pulls a cart
The ground
The horses hoof
The cart
None
If a bird flies into a kitchen window, which of the following is correct?
the bird hit the window
the bird was the action force
The window hit the bird
All of the above
The force an action force depends on the
Mass of the reaction force
The speed of the action force
The speed of the reaction force
A person who jumps from the earth does not see the opposite reaction force of the earth because
It happens too fast
It is too small to be seen
It doesn’t happen
The earth is too big
They left a flying birds and aircraft is caused by
Their speed
Pushing up of the air on their wings
Hot air rising
Less gravity at altitude
The action force that results in lift and birds and aircraft is
Downward pushing air
Gravity
Forward movement
None
The first object acting on the second object
Action force
Reaction force
The second object acting on the first
Reaction force
Action force
The change of momentum depends on
The force that acts
The length of Time acts
None
all
The momentum of an object is the product of its mass
Times time
Times velocity
Divided by force
Divided by time
The average force multiplied by the time during in which it acts is
Impact
Momentum
Impulse
The law of conservation of momentum states that momentum is conserved when there is no net
Internal force
External force
Mass
Impact
Momenta combine by
Vector rules
One half the time
Twice the mass
all
Momentum occurs only when an object
Is at rest
Is acted on by a force
Is in motion
The amount of matter in an object is its
Volume
Force
mass
Velocity
Force measured in newtons is
Density
Mass
Impact
Force times time is used to measure a
Impulse
change in momentum
Impact
Impulse and change in momentum
If the time of an impact is increase the impulse is
Increased
Stays the same
Doubles
Decreases
If the force of an object causes it to bounce off another object rather than stop then the force is
Greater
Less
Equal in both cases
Zero
the Pelton We’ll what is an improvement and paddle wheels because it used
Flat blades
Less water
Cupped blades
Fan blades
Momentum can be best described as
Force in motion
Inertia in motion
Mass in motion
Velocity in motion
When momentum is transferred from one pool ball to another the collision is
Elastic
Cannot be conserved
Inelastic
Has no momentum
Two trains which couple are displaying
Inelastic collision
Elastic collision
Bouncing
None
When momentum or any quantity in physics does not change
Impact time
Elastic
External force
Conserved
Decreases the impulse of an object
Inertia
Impulse
Bouncing
Impact time
Tendency of objects in motion tend to stay in motion
Elastic
External force
inertia
Inelastic
A collision where an object is not deformed or generates heat
Bouncing
External force
Impulse
Elastic
Indicates a hire impulse that if it doesn’t do this
Impact
Impulse
Conserved
Bouncing
A force measured in newtons when objects collide
Inertia
Impact
External force
Impulse
A change in momentum or force times time
Impact
Impulse
External force
inertia
Must be absent to obey the law of conservation of momentum
Impact time
Inertia
External force
Impact
Collision and which objects stick together
Elastic
Inelastic
Conserved
Bouncing
Momentum is conserved even when interacting objects to move along the same straight line
True
false
Most of the energy available to all earth processes come from
Fossil fuels
The sun
Food
Cosmic radiation
Which of these are units of work
Newton meter
Joule
Watt
Which is a unit of power
Watt
Joules per second
Kilojoule
All
The English unit of power is
Horsepower
Foot pound
Yard labor
Watt
Anything that has moving parts is a form of what kind of energy
Heat
Mechanical
Light
Wind
Stored energy is known as
Chemical energy
Electric energy
Potential energy
All
Energy of moving objects is known as
Kinetic energy
Potential energy
Heat energy
None of them
What is an example of potential energy
Chemical bonds
Fossil fuels
Batteries
All of the above
Increasing the speed of an object increases its
Mass
Potential energy
Height
Kinetic energy
Most of the energy that is not useful and the machine is changed to
Chemical energy
Potential energy
Heat energy
All of the above
Machine does which of the following
multiplies force
Changes the direction of a force
Increase the speed
All of the above
the force applied to a machine like a lever is called the
Potential force
Effort force
Acceleration force
Resistance force
In a wheel barrow the resistance force is
The handles
The wheel
The weight
None
Involves second and third class levers the fulcrum is located in
The middle
On one end
On the resistance end
On the effort end
A first class lever can gain greater force of the effort bar is
Shorter
Close to the fulcrum
Closer to the resistance
Longer
The advantage of a third class lover is to
Gain force
Decrease speed
Increase speed
Decrease force
Enable Snapchat today work
Power
Machine
Efficiency
Energy
The point around which a lever turns
Mechanical advantage
Fulcrum
Power
Efficiency
Energy of motion
Kinetic energy
Potential energy
Mechanical advantage
Energy
Device which changes direction or Force
Fulcrum
Machine
Mechanical advantage
Potential energy
Ratio of output force to input force
Kinetic energy
Power
Mechanical advantage
Efficiency
Energy of position
Potential energy
Mechanical advantage
Kinetic energy
Chemical energy
Rate at which work is done
watt
Power
Energy
Work
Ratio of useful work to total work
Work
Power
Efficiency
Energy
Objects that move around an external axis
Revolution
Centripetal force
Centrifugal force
Rotation
Straight line around which rotation takes place
Axis
Rotation
Linear speed
Tangential speed
Distance moved per time
Linear speed
Tangential speed
Rotational speed
Rotation
Outward force due to circular motion
Centrifugal force
Rotational speed
Revolution
Centripetal force
Objects moving around an internal axis
Rotation
Revolution
Rotational speed
Tangential speed
Speed of object moving in circle
Rotation
Tangential speed
Rotational speed
Revolution
Inward force causing objects to move in a circle
Centrifugal force
Rotation
Centripetal force
Revolution
Number of rotations per unit of town
Rotational speed
Tangential speed
Linear speed
Centrifugal force
Does the earth rotate or revolve around the sun
Rotate
Revolve
Does the earth rotate or revolve on it’s axis
Rotate
Revolve
Must be applied to cause torque
Lever arm
Force
Balance
Linear momentum
The distance from the axis to work force is applied
Rotational inertia
Angular momentum
Rotational velocity
Lever arm
The inertia of rotating objects causes
Rotational velocity
Angular momentum
Linear momentum
Rotational inertia
Occurs when a force is applied with leverage
Rotational inertia
Torque
Rotational velocity
Resistance of an object to changes and its rotational momentum
Rotational inertia
linear momentum
Angular momentum
Rotational velocity
Occurs in all objects that have inertia
Angular momentum
Linear momentum
Rotational inertia
Rotational velocity
A right angle push or pull
Perpendicular
Balance
Force
Direction assigned to rotational speed
Perpendicular
Rotational velocity
Rotational inertia
A long pendulum has more_______ then a short pendulum
Rotational velocity
Balanced forces
Perpendicular force
Torque
Mass times radius squared
Distance times rotational inertia
Force times lever arm length
Rotational velocity times rotational inertia
How long pendulum has more rotational Inertia that a short but pendulum because of its
Rotation of velocity
Rotational speed
linear motion
Mass
Rotational inertia of the human body is least about the
Transverse axis
Median access
Rotational axis
Longitudinal axis
Angular momentum
I=mvr
I=mr^2
I=cgm
I=f•d
What law is this? If no unbalanced external torque acts on a rotating system the angular momentum of that system is constant
Law of conservation of energy
Law of inertia
Law of conservation of angular momentum
Newtons third law
A flashing light clock at high-speed would make a
Horizontal line
Perpendicular line
Straight line
Diagonal line
Space and time are
Different
Relative
Close
what way does time travel
Forward
Backwards
Both
What is the speed of light
186,000 mi/sec
190,000 mi/sec
189,000 mi/sec
170,000 mi/sec
The point located at the objects average position of weight
Center of gravity
Neither
Center of mass
Are the center of gravity and center of mass equal
Yes
No
Objects that cannot be balanced
Unstable equilibrium
stable equilibrium
Neutral equilibrium
Objects that can Be tilted or moved at any angle and remain stable
Unstable equilibrium
stable equilibrium
Neutral equilibrium
Objects that can Be moved around and does not change the center of gravity
Unstable equilibrium
stable equilibrium
Neutral equilibrium
