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WorksheetsAmplify Force/Motion EOM Review 23-24
Total questions: 69
Worksheet time: 55mins
A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information?
Friction increases mechanical advantage
Friction makes movement of an object easier.
Friction opposes the direction of movement.
Friction reduces the amount of work used to move an object.
If an unbalanced force acts on a stationary object, the object will...
remain stationary
move away from the force
accelerate in the direction of the force
accelerate in the opposite direction of the force
If no force is being applied to a stationary object, the object will...
remain stationary.
accelerate in the direction of the force.
move at a constant speed in the direction of the force.
accelerate in the opposite direction of the force
A brick is resting on a level, smooth surface. When a student applies a horizontal force of 5 N to the brick, the force of friction on the brick is also 5 N. Which statement BEST describes the effect of these two forces on the brick?
The net force on the brick is 0 N, and the brick begins to move.
The net force on the brick is 0 N, and the brick remains at rest.
The net force on the brick is 10 N, and the brick begins to move.
The net force on the brick is 10 N, and the brick remains at rest.
Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?
Frictional forces oppose the motion of the car.
The natural state of an object is to be at rest.
Forward motion slowly runs out as energy is expended.
Inertia acting on an object will dissipate.
Complete the sentence to match your observations: When you exert a stronger force on an object, you will see ________ change in velocity as compared to exerting a weaker force on the same object.
a greater
a weaker
the same
Which of the following is NOT TRUE about friction:
Friction is a force that acts in the opposite direction of motion.
Friction slows objects down.
There is no friction on earth.
Friction on carpet is greater than friction on a bare floor.
Speed in a particular direction
force
velocity
motion
Which of the following pictures models Claim 1: The thrusters caused the pod to move in the opposite direction.
Which of the following models claim 2: The thrusters only slowed the pod, it didn't stop. The pod hit the space station, which made it bounce and move in the opposite direction.
Three boats were moving across the surface of a lake. The gray and pink boats are a greater mass than the orange boat. Each boat was bumped by another boat. Which boat experienced the strongest force when hit? How do you know?
The gray and pink boats because they are more massive, and all boats changed velocity by same amount.
The pink boat - it's as massive as the gray boat and has the highest ending speed.
All three - they all changed speed by the same amount.
The gray boat - it takes more force to slow down an object than it takes to make it go faster.
In which crash did the puck experience a stronger force?
The puck didn't experience a force. Only the paddles experienced force.
Crash 2: The force of the purple paddle was stronger in this crash because it has more mass, so the force on the puck was stronger,
The diagram doesn't tell you anything about the force on the puck.
The puck experienced the same force in both crashes.
In which crash did the test car experience a stronger force?
Crash 1: Force on garbage truck was stronger, so force on car was also stronger.
There is NO force on the car. In each crash, only the truck experienced force.
It was the same from both crashes. The trucks changed speed by the same amount in both crashes, so the force on the test car was the same both times.
The diagram doesn't tell you anything about the force on the test car. It only tells you about the force on the trucks.
In which crash did the skateboard experience the stronger force? Why?
The skateboard did not experience force, only the shopping cart did.
Crash 2; the force on the cart was stronger in this crash.
The diagram doesn't tell you anything about the force on the skateboard.
The skateboard experienced THE SAME force in both crashes.
In which crash does the satellite experience a stronger force?
It was the same force in both crashes.
Crash 1: The force exerted by the black asteroid would have been stronger in this crash, so the force on the satellite would also have been stronger.
The diagram doesn't tell you anything about the force on the satellite.
There is no force on the satellite.
In order for an object to start moving, the force must come from
the same direction as the object's motion
the opposite direction as the object's motion
any direction
In order for an object to stop moving, the force must come from
the same direction as the object's motion
the opposite direction as the object's motion
any direction.
The motion of an object depends on the_____ of the object and the amount of ____ used.
outside and equal
mass and force
force and Sir Isaac Newton
The moment when two objects hit each other
Force
Speed
Collision
A ___________ is required to change the velocity of an object.
force
larger mass
smaller mass
A stronger force can cause a greater change in
direction.
speed.
velocity.
mass.
The amount of matter in an object is called its...
pressure
weight
mass
force
If the same strength force is exerted on two objects, the object with ________ mass will have a _________ change in velocity.
less, lesser
more, greater
more, lesser
less, shorter
A force is:
A push
A pull
No movement
Oldest to youngest
A balanced force ___________change the motion of object.
Does
Does Not
Which picture(s) shows an unbalanced force?
How does gravity pull?
Equal to the height
Equal to the mass of Earth
Downward or toward center of gravity.
Upward toward the center of gravity
Ava pushed a chair and it slid across the carpet floor. The chair gradually slowed down and stopped after moving 10 meters.
Why did the chair stop moving?
The floor absorbs force from the chair.
The floor exerted a force that is opposite to the direction of the chair’s motion.
All objects stop moving because their natural state is to be still.
The chair ran out of force.
There is ______ friction on a smooth surface.
more
less
no
lots of
Friction moves in the ______ direction of the object moving.
same
different
opposite
What will happen to the friction when an item moves on a rough surface?
Nothing
It will decrease.
It will increase.
It will disappear.
______ is the gravitational force exerted on an object
Mass
Gravity
Force
Weight
What statement is true?
Mass never changes. Weight does.
Weight never changes. Mass does.
Both mass and weight change because they are affected by gravity.
Neither mass nor weight change. They are always the same.
If you have an empty box and then fill it with books, which statement is true about the box?
The mass and weight are directly proportional and both increase.
The mass increases and the weight decreases because they are indirectly proportional.
The weight increases but since mass doesn't change it stays the same.
Gravity pulls less on the box when it is full so it weighs less.
Mass is measured in ___________
Newtons
Joules
Grams
Pounds
Force is measured in _______
Grams
Pounds
Newtons
Joules
Vocab: The total amount of matter that makes up an object.
Matter
Mass
Particles
Collisions
True/False: An object's MASS will affect its Change of VELOCITY
True
False
If the force of gravity acting upon an object changes...
its height changes too
its length changes too
its weight changes too
its mass changes too
If you went to the moon right now, your weight would be...
MORE than it is on Earth
Less than it is on Earth
the Same as on Earth
Your weight would be Unchanged
If you were dropped on the moon right now, your mass would be
More than on Earth
Less than on Earth
Unchanged
True/False: Even though your mass might be the same on the moon as it is on Earth, the gravitational pull would be weaker on the moon because the moon is less massive than Earth is
True
False
If you kick a kickball, the change of velocity will be PROPORTIONAL to the........
Change of weight
Change of Pace
Change of Direction
Change of Velocity
Which of these best explains the relationship between mass and weight?
Mass and weight both remain constant.
Mass and weight both depend upon gravity.
Mass remains constant while weight depends upon gravity.
Mass depends upon gravity while weight remains constant.
The planets in our solar system revolve around the sun because
the sun is older than the planets
the sun is hotter than the planets.
the sun has more mass than the planets.
the sun produces more light than the planets.
The force of gravity pulls down on Carol’s house with a total force of 300,000 Newtons.
The force of gravity on Carol’s house would be exactly twice as much if the house...
were twice as tall
had twice as much mass
had twice as much volume
covered twice as much area
Gravity is a force that pulls objects down toward Earth’s surface.
Which two statements explain why a student standing at the top of a step stool does not move downward?
The student’s mass is not large enough to be affected by gravity.
The step stool exerts a force on the student in the opposite direction of gravity.
The student exerts an upward force on the step stool equal to the gravitational force.
The step stool is a barrier that blocks the gravitational force.
The step stool exerts a force on the student equal to the force gravity exerts on the student.
What is the NET force acting on the object.
(Hint: Consider the direction of the force applied and do some simple math)
10
5
0
-5
Is the following object BALANCED or UNBALANCED according to the net force and simple math?
BALANCED
UNBALANCED
A book is sitting on a table. Both the book and the table are still. We can say that the forces on these objects are
BALANCED
UNBALANCED
NON-CONTACT
FRICTIONAL
A person steps out of a boat and onto a dock. As the person moves forward onto the dock, the boat moves backward.
*Which statement best explains the backward motion of the boat as the person moves forward?*
Every mass exerts a force on every other mass
An object at rest tends to stay at rest
Friction opposes the motion of the object
When force is applied in one direction, equal force is applied in the opposite direction.
Assume there is minimal friction b/c the sphere is on a smooth, level surface...
In what direction will the sphere travel based on the force applied?
To the left
To the right
Up because the ground applies a force
Down because gravity will pull it through the surface
The illustration shows all the forces in Newtons (N) acting on a box.
With the combination of all the forces acting on the box results in a force acting on the box
To the right with a strength of 10 N
To the left with a strength of 26 N
To the right with a strength of 18 N
To the left with a strength of 8 N
Each figure below shows a force measured in Newtons pushing on a block. If there are no other forces pushing on the block, in which case is the acceleration of the block greatest?
A bus driving on the road during the winter drives onto an icy spot and begins to slide. A decrease in which of the following forces causes the bus to slide?
Thrust
Friction
Acceleration
Mobility
Astronauts design an experiment to test the effect of force on an object. They know that one of the forces we experience on Earth is less than on the moon. Which force are the astronauts testing?
Friction
Gravity
Acceleration
On November 12th, 2014 the Philae Lander touched down on comet 67P/C-G. Unfortunately it bounced after the initial collision instead of clinging to the surface as planned. Which of the following are true about the forces involved in this collision?
The forces in the collision were in the same direction
The comet exerted more force than the lander because it has more mass
The lander exerted more force than the comet because action forces always have more magnitude than reaction forces
The force exerted by the comet was equal and opposite to the force exerted by the lander
