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WorksheetsForce and Motion DCA Review
Total questions: 60
Worksheet time: 37mins
To make an object move you must first apply ---
an opposing force
an unbalanced force
a stationary force
a vertical force
a force is best defined as ---
the application of weight
a push or pull that is exerted on matter
the flow of electric charges
a bond in which electrons are shared
A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --
0 N of force
less than 20 N of force
20 N of force
more than 20 N of force
Which change would require more force to pull the wooden block up the ramp?
Have the student use two hands
Reduce the mass of the wooden block.
Restack the books so the thinnest book is on the bottom.
Glue sandpaper to the surface of the ramp.
To make an object move you must first apply ---
an opposing force
an unbalanced force
a stationary force
a vertical force
a force is best defined as ---
the application of weight
a push or pull that is exerted on matter
the flow of electric charges
a bond in which electrons are shared
A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --
0 N of force
less than 20 N of force
20 N of force
more than 20 N of force
Which change would require more force to pull the wooden block up the ramp?
Have the student use two hands
Reduce the mass of the wooden block.
Restack the books so the thinnest book is on the bottom.
Glue sandpaper to the surface of the ramp.
Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?
He was riding in the last car of the train.
He had heat exhaustion from the overcrowded train.
Oliver's body resisted a change in the subway train's inertia.
Oliver's body was responding to the force of gravity.
Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
Newton's Law of Universal Gravitation
Which law explains the relationship among mass, force and acceleration?
Universal Law of Gavitation
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.
force = mass x acceleration
Which object would have the greatest force?
A 5 kg object accelerating at 10 m/s
A 5 kg object accelerating at 20 m/s
a 20 kg object accelerating at 4 m/s
a 20 kg object accelerating at 3 m/s
Which of these would be different for an object if measured on the Earth and on the Moon?
Mass
Weight
Volume
Density
The diagram below show the forces acting on a soccer ball.
In which of the diagrams will the ball remain motionless?
W
X
Y
Z
In the diagram below, a girl sits on a sled and slides down a hill of snow. Which arrow represents the force of friction opposing the motion of the sled down the hill?
Arrow A
Arrow B
Arrow C
Arrow D
Which of these examples best illustrates Newton's Second Low of Motion?
A 100 Ib boy has twice as much inertia as a 200 Ib boy.
A truck needs a more powerful engine than a small car.
A hockey puck slides easily across the ice.
A satellite stays in orbit for a long time.
Which setup below would require the least force to lift a 100-gram mass a distance of 10 centimeters?
According to Newton's Third Law of Motion, if Mike pushes down on the springboard to being his dive, what is the reaction force?
Mike splashing into the water
The springboard pushing Mike into the air
The height of the water when Mike enters the water
The sound the board makes as he pushes into the air
Which principle best explains why the sprinkler spins?
Every action has an equal and opposite reaction.
Solid substances are usually more dense than liquid substance.
Energy is released when water condenses.
Most substances expand when heated and contract when cooled.
Ana pushed on a big rock in her back yard. She was unable to get it to move because she did not -
apply enough force
have a good grip on the rock
have enough mass
weigh enough
Many bicycles use a hand brake to control their speed. When the brake is engaged, a rubber pad presses against the tire. What force of motion does the hand brake rely upon to slow the bicycle?
Gravity
Friction
Electricity
Magnetism
Which of the following situations is an example of Newton's third law of motion?
A boy jumping on a trampoline
A boy falling forward when a bus stops
A chair sitting on the floor
An apple falling from a tree
In a head-on collision, a person who is not wearing a seat belt continues to move forward at the original speed of the car because of -
weight
mass
gravity
inertia
A recent space shuttle mission carried a piece of cargo that had a mass of 122 kg with a weight of 1195.6 N. While orbiting the Earth, the astronauts weighted the equipment again and found it to be 24.4 N.
What was the mass of the equipment at this point?
122 kg
7.6 kg
4.88 kg
2.49 kg
What is the Net Force and the direction of the object's movement as a result of the net force?
12N, Right
12N, Left
4N, Left
4N, Right
The distance traveled divided by the time in which the motion occurred is called
speed.
motion.
velocity.
Mark drives to his friends house 200 miles in 4 hours. What is Mark's speed?
800 mph
20 mph
50 mph
The speed of an object in a particular direction is called
motion.
inertia.
velocity.
Acceleration is the rate at which velocity changes.
True
False
A push, pull or twist is the definition for
motion.
friction.
force.
The S.I. unit for force is the
pound.
newton.
km.
Combining all forces acting on an object is called
acceleration.
inertia.
net force.
If Bob pushes a box north with 40 N of force and Bill helps by pulling the box north with 20 N of force, what is the net force acting on the box?
20 N
60 N
If forces are in the same direction you add all forces together and if they are in opposite directions you will subtract the smaller force from the larger force.
True
False
What type of forces cause objects to move?
balanced forces
unbalanced forces
A force that opposes motion between two surfaces that are in contact with each other?
friction
inertia
gravity
Which of the following would have the best friction?
ice covered road
gravel road
asphalt road
Which of the following is NOT a way to reduce friction?
sanding
grease or oil
increasing the texture
Which of the following is one of the five ways an object's motion can change:
hit something
bounce off something
Speed Up
fly off the table
Which of the following is one of the five ways an object's motion can change:
hit something
bounce off something
Speed Up
fly off the table
In order for an object to speed up, the direction of the force is:
in any direction
in the same direction as the object's motion
in the opposite direction of the object's motion
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.
Which force caused the jar lid to travel faster and reach the end of the meter stick first?
the weaker force
the stronger force
both forces had the same effect
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.
A push or pull that can cause motion.
velocity
speed
cause
force
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.
What factors affect acceleration?
friction and gravity
distance and speed
velocity and time
force and mass
Give an example of Newton's second law in action.
Pushing a car and causing it to accelerate
Blowing air into a balloon and watching it expand.
Turning on a light switch and seeing the light bulb illuminate.
Throwing a ball and watching it fall to the ground.
Newton's 3rd Law: When a student on a skateboarder applies a force of 20 Newton to 'push' the ball in a positive direction, what does the student experience?
A positive (+) force of the same magnitude
A negative (-) force of equal magnitude
No force at all, only the ball experiences the force
A force that is smaller than the 'push' do to being more massive
Newton's 3rd Law: When a student (40 kg) on a skateboard applies a force to accelerate a medicine ball (5kg) to the right, the force acting on the student is:
A much smaller force
A much larger force
Exactly the same force applied to the ball
No answer is correct
When the masses of the objects in a collision are very different, which one experiences a greater effect?
The smaller less massive one
The larger more massive one
What does inertia mean?
That an object will continue to move the same speed and direction until another force acts on it
That an object will not move until a force acts on it
Neither is true
If you were in a car accident, would you want to increase or decrease the duration of the collision?
Increase
Decrease
A moth crashes into the windshield of your car, which undergoes greater force?
The moth
Your car
They are the same
Not enough information
An asteroid travels at 6,000 meters in 10 seconds. What is the speed?
60 meters/seconds
60 seconds/meter
600 meters/second
6 meters/second
What happens when a car hits a bug?
Both the car and the bug experience the same forces
Only the bug experiences the forces
Only the car experiences the forces
Neither the car nor the bug experience any forces
