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WorksheetsForce and Motion
Total questions: 100
Worksheet time: 1hrs 1mins
If you push on a wall of a building, what will happen?
The wall remains stable because force does not work on inanimate objects.
The wall is larger so there is no force exerted.
The wall pushes back with a force equal in size and opposite in direction.
The wall is pushed in the same direction as the force of your push.
Which is true of action and reaction forces?
They are unequal and in the opposite direction.
They are unequal and in the same direction.
They are equal and in the same direction.
They are equal and in the opposite direction.
What are the interacting force pairs of Newton’s Third Law called?
action and reaction forces
forwards and backwards forces
acceleration and mass forces
gravity and magnetic forces
To swim forward in water, your arms push against the water with a force. What does the water do?
The water pushes against your arms with an equal and opposite force.
The water does not push against your body and that is how you move forward.
The water pushes against your arms with a greater force so that you move forward.
The water pushes backwards in the same direction as your arms.
When a bird flaps its wings, which direction does the air push against the bird’s wings?
forward
down
sideways
up
When a bird flaps its wings, which direction do the bird’s wings push the air?
up
sideways
forward
down
Which is true about forces?
One force is always bigger than another.
Forces always come in pairs.
Forces always produce movement.
Forces are in one direction.
Which of the following statements is Newton’s Third Law?
For every action, there is an equal and opposite reaction.
The greater the mass, the greater the amount of force needed.
An object at rest will remain at rest unless acted on by an unbalanced force.
Acceleration is produced when a force acts on a mass.
When you sit in a chair, what is happening?
Only your body exerts a force on the chair.
Your body exerts a force on the chair and the chair exerts a force on your body.
Since there is no movement there are no forces at work.
Only the chair exerts a force on your body.
What is a force?
The energy of an object.
A push or a pull acting on an object.
Energy that surrounds us in the universe.
Newton’s Third Law
A force is a...
Pull
The ability to change direction
Push
All of the above
An object at rest will stay at rest unless acted upon by an outside force. Which activity is an example of this law?
A baseball player slides into second base.
A floating stick is carried over a waterfall.
A football is kicked off a tee.
A bicycle travels faster as it goes downhill.
_________ is a force that resists motion between surfaces that are in contact?
Inertia
Friction
Acceleration
Resistance
A swimmer swims across a swimming pool, and at the end the pool she turns around and pushes off the wall with her feet. Which option describes a pair of action-reaction forces during the push?
The force of gravity on her body and the force of her feet on the wall.
The force of her feet on the wall and the force of the water on her front
The force of her feet on the wall and the force of the wall on her feet.
The force of gravity on her body and the force of the wall on her feet.
When a hammer strikes a nail, the nail
exerts an equal and opposite force back on the hammer.
exerts an unbalanced force that changes its velocity.
exerts a force equal to the weight of the hammer.
exerts balanced forces that helps it from moving.
A student pushes on an object with a force of 6 newtons and the object does not move. What force does the object exert on the student’s hands?
6 Newtons
3 Newtons
12 Newtons
0 Newtons
Mrs. Knight drops her briefcase. When the briefcase lands on the floor, what is the reaction force to the action force of the briefcase on the floor?
the force of the floor on the briefcase
the force of air on the sides of the briefcase
the attraction of Earth for the briefcase
the force of friction between the briefcase and the floor
Forces affect objects by changing the
speed only
movement of objects but only if they were already in motion
speed direction, or shape
A student pushes a box to slide it across the floor. Which statement explains why the box begins to move?
The weight of the box is less than the force of friction.
The weight of the box is greater than the force of friction.
The applied force is greater than the force of friction.
The applied force is less than the force of friction.
A jet plane is moving at a constant velocity on a flat surface. Which forces act against the forward motion of the plane?
gravity and engine thrust
engine thrust and friction
friction and air resistance
air resistance and gravity
The strength of a force is measured in
Newtons
Joules
Forces
Calories
A toy car starts at the top of a ramp, rolls down and slows to a stop. Which acts most to bring the car to a stop?
friction
magnetism
wind speed
electrical force
Isaac Newton discovered the three laws of motion. Which example BEST illustrates Newton's third law of motion, which describes action and reaction forces?
a vehicle rounds a curve and changes its acceleration
a heavier ball falls at the same speed as a lighter ball
a book slides forward on a seat when the car stops
a rocket takes off from the ground
Which statement BEST explains why a car that is rolling on a level surface will eventually come to a stop?
The natural state of an object is to be at rest.
Inertia acting on an object will dissipate.
Frictional forces oppose the motion of the car.
Forward motion slowly runs out as energy is expended.
A moving train comes to a stop at the station. What happened to make the train change motion?
The train experienced a balanced force.
The train experienced an unbalanced force.
The train would stop with or without forces.
The train does not experience forces acting on it.
Which is the best statement about an object in motion?
The object will remain in motion until it experiences an unbalanced force.
The object will keep accelerating.
The object will always slow down.
The object will eventually always stop.
John’s team pulls one end of a rope with 8 Newtons of force. Mike’s team pulls the other end of the rope with 4 Newtons of force. What will happen to the rope?
The rope will not move due to balanced forces.
Mike’s team will fall backwards.
The rope will move towards John.
The rope will move towards Mike.
A car is travelling east, when suddenly a more massive car travelling north hits it with a greater force. What is likely to happen to the car that was originally travelling east?
The car will be pushed westward due to the unbalanced.
The car will be pushed southward due to the unbalanced.
We only know that the car changes directions.
The car will be pushed northward due to the unbalanced forces.
What happens when a force opposite in direction and greater in magnitude is applied to a moving object?
The object’s motion remains constant.
The object will speed up.
The object will always move backwards.
The object will slow down.
What happens when balanced forces act on an object at rest?
The object will push back with a greater force.
The object will remain at rest.
The object will move forward.
The object will accelerate.
What happens to an object if the total of the forces acting on it are greater than zero?
Nothing will happen to the object.
The object’s motion will change.
The object will move forward.
The object’s motion will remain the same.
What type of force is shown in this diagram?
motion
unbalanced force
balanced force
gravitational force
Which diagram shows a balanced force?
What is a balanced force?
A force that is greater in one direction.
A force that produces motion.
A force used for balancing objects.
A force that is equal and opposite in direction
The arrows in the diagram represent equal forces acting on balls that are resting on a table. Which of the balls will be accelerated if the forces are applied?
Ball 1
Ball 2
Ball 3
Ball 4
The best example of balanced forces is a
car increasing speed.
bus parked in a garage.
ball kicked along a flat surface.
roller coaster slowing down on an incline.
Two forces act in opposite directions on a wood block. What will happen if the forces are unbalanced?
The block will balance the forces.
The forces will reverse direction.
The mass of the block will change.
The position of the block will change.
Forces that cancel each other are called
inactivated
balanced
unbalanced
neutral
When two unequal forces act in opposite directions on a moving object, the object will
absorb the forces.
continue to move in the same direction.
move in the same direction as the larger force.
come to an immediate stop.
An example of unbalanced forces in action is:
a boat floating on still water
a rising balloon
a person sitting on a chair
What happens when an unbalanced force is applied to an object at rest
it moves up
it remains at rest
it accelerates
it gains mass
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 10 N, and the brick begins to move.
The net force on the brick is 10 N, and the brick remains at rest.
The net force on the brick is 0 N, and the brick remains at rest.
Which is an example of balanced forces?
a book falling off a table
a door starting to open
a basketball being held
a truck beginning to accelerate
When unbalanced forces act on an object in the same direction the object will likely do all of the following except:
not change movement
stop moving
change direction
start moving
When balanced forces act on an object, the objective will likely
move
speed up
Not move
One person pulls on a rope with a force of 400 N to the right. Another person pulls on the opposite end with a force of 600 N to the left. What is the net force?
400 N to the right
1000 N to the left
600 N to the left
200 N to the left
In a lab investigation, a student notes that two metal blocks have the same mass. Based on this observation, if the two blocks were put on opposite sides of a balance, they would best represent
balanced forces.
unbalanced forces.
equal and opposite reactions.
objects in motion.
Four forces are acting on a box, as shown below. This box will increase in speed
downward and to the right
upward and to the left
downward and to the left
upward and to the right
In a game of tug-of-war, you pull on the rope with a force of 100 N to the right and your friend pulls on the rope with a force of 100 N to the left. What is the net force on the rope?
200 N to the right
0 N
200 N to the left
100 N to the right
The diagram shows three forces being applied to a crate on a floor. If the crate is to remain stationary, what amount of force must be applied for z?
800 N
2000 N
1200 N
2400 N
Two students are pushing a sofa across a room. What is the net force applied to the sofa by the students?
150 N
200 N
250 N
400 N
The diagram shows forces acting on a wagon. A wagon is pulled to the right using a force of 20 N and to the left using a force of 30 N. What is the net force on the wagon?
10 newtons to the left
10 newtons to the right
50 newtons to the left
50 newtons to the right
Some race cars are equipped with parachutes to help bring the car to a stop. Which most likely causes the change in the velocity of the race car?
a balanced force exerted by the parachute
an increase in the force exerted by the car
a net force of zero between the car and parachute
an unbalanced force between the car and parachute
The box is being pushed to the right with a force of 300 newtons, and to the left with a force of 400 newtons. Which is the net force on the box?
300 newtons
700 newtons
400 newtons
100 newtons
Which statement BEST describes the forces acting on a parked car?
There are no forces on the car.
The car is being subjected to balanced forces
The car is being subjected to unbalanced forces
You are riding on a bus and tossing a ball straight up and down inside the bus. What does the motion of the ball look like from your frame of reference?
You are riding on a bus and tossing a ball straight up and down inside the bus. What does the motion of the ball look like from the frame of reference of a person on a sidewalk beside the street as the bus goes by?
You are riding on a bus and tossing a ball straight up and down inside the bus. What does the motion of the ball look like from the frame of reference of a person on a sidewalk beside the street as the bus goes by?
We cannot figure average velocity for Team A’s potato because we don’t know the distance travelled.
We cannot figure average velocity for Team A’s potato because we don’t know the time.
We cannot figure average velocity for Team A’s potato because we don’t know the displacement.
We cannot figure average velocity for Team A’s potato because we don’t know average speed.
Team A built a potato thrower that shot a potato 30 feet in 1.5 seconds. The potato then rolled 15 more feet towards the right in 3 seconds. What was the average speed for Team A’s potato?
45 feet per second
10 feet per second
We cannot figure average speed for Team A’s potato.
20 feet per second
Car A went 52 miles in 30 minutes. Car B went 96 miles in 45 minutes. Car C went 28 miles in 20 minutes. Which statement is true?
We cannot solve the problem for velocity because mass is unknown.
We cannot solve the problem for velocity because force is unknown.
We cannot solve the problem for velocity because acceleration is unknown.
We cannot solve the problem for velocity because displacement is unknown.
A bus is travelling along its route. Which statement could represent the bus’s velocity?
The bus traveled at an average of 20 mph.
The bus made three left turns along the route.
The bus traveled at 20 mph east.
The bus traveled at 20 mph for 30 minutes.
What is the difference between speed and velocity?
Speed includes a direction of the motion.
Nothing, they are the same.
Velocity includes the change in the position.
Velocity includes the acceleration of the motion.
What is displacement?
The time it takes for an object to move a certain distance.
The direction an object moved.
An object’s change in overall position.
The distance an object moved.
How can speed be described?
The distance traveled by an object in a certain time.
The mass multiplied by the acceleration of an object.
The distance an object travels at a certain velocity.
The force on an object divided by the mas of an object.
What is the frame of reference?
The object or background from which the movement is compared
The object that is moving
The ability of an object to change size of motion.
The ability of an object to change direction
Two objects traveling at the same speed have different velocities if they
start at different times
travel different distances
have different masses
move in different directions
Which of the following represents the velocity of a moving object?
40
40 m/s
40 m north
40 m/s north
Margaret is running a full lap around a circular track. She is facing north when she starts. What direction will she be facing after she has completed half of a lap?
north
south
east
west
Student 1 rides in a moving car and observes a bus traveling east. She estimates that it is traveling at a rate of 20 kilometers per hour (km/h). Student 2 is standing on the sidewalk and observes the same bus at the same time. She estimates that it is moving east at a rate of 50 km/h. Which best explains this difference?
Velocity varies with the compass direction of motion.
Measurement error causes multiple observations of motion to conflict.
All motion is relative to the frame of reference chosen for measurement.
Acceleration and velocity have different values because they are different measures of motion.
Which factor is inversely proportional to the acceleration of an object?
Velocity of the object
Net force acting upon the object
Mass of the object
Speed and direction of the object
Which factor is directly proportional to the acceleration of an object?
Net force acting upon the object
Velocity of the object
Mass of the object
Speed and direction of the object
Which statement is true about acceleration due to gravity?
There is no difference between acceleration due to gravity and acceleration from an unbalanced force.
Acceleration due to gravity is not affected by mass.
Force is not affected by acceleration due to gravity.
Acceleration due to gravity is not the same for every object.
A golf ball and a bowling ball are both dropped from a ledge. Which ball will fall faster?
Both balls will fall at the same rate because of acceleration due to gravity.
The golf ball because it has less mass and will have greater acceleration.
The bowling ball because it has less mass and will have greater acceleration.
The bowling ball because it has more mass and will have greater acceleration.
Which factor can cause acceleration to decrease?
If mass is increased
If force remains constant
If weight is decreased
If speed is increased
Assuming an object’s mass stays the same, what will happen when the force on an object increases?
There is no change.
speed always decreases
acceleration changes
mass increases
Evelyn drove her car down the road until she came to a stop sign. Evelyn applied the brakes to stop the car. Which best describes what happened?
Acceleration no longer exists as the car stops.
Acceleration decreased velocity until the car stopped.
Acceleration remained constant and friction caused the car to stop.
Acceleration increased velocity until the car stopped.
What will cause an object to accelerate?
An object experiences a net force greater than 0.
Any force is applied to an object.
A balanced force acts on the object.
The mass of an object is increased.
When an unbalanced force is applied to an object, in which direction will the object accelerate?
In the direction opposite the force
In the direction parallel to the force
In the direction perpendicular to the force
In the direction of the force
What is acceleration?
The rate of change in an object’s force.
The rate of change in an object’s mass.
The rate of change in an object’s gravity.
The rate of change in an object’s velocity.
When something slows, its acceleration is
constant
positive
negative
instantaneous
A force of 20 N acts upon a 5 kg block. Calculate the acceleration of the object.
100 m/s
20 gm/s2
25 gm/s2
4 gm/s2
The rate of acceleration of an object is determined by the mass of the object and
the initial velocity of the object.
the average energy of the object.
the direction of movement of the object.
the forces acting on the object.
Select all that apply. Acceleration is...
not moving
slowing down
speeding up
changing direction
The rate of acceleration of an object is determined by the mass of the object and
the direction of movement of the object.
the average energy of the object.
the forces acting on the object.
the initial velocity of the object.
Which statement explains why you are thrown forward when the car you are riding in suddenly stops?
You are are in motion as the car is driving, and when it stops, your body continues to be in motion
The car stopping must balance out by having you move forward
You are pushed forward by the force of the car stopping
The force of the crash accelerates you forward
Newton's __________ Law of Motion states that an object stays at rest and constant velocity, unless it is acted upon an unbalanced force.
1st
4th
2nd
3rd
If you push a bowling ball and a golf ball with the same force, you would see
no acceleration on either ball
a greater acceleration on the golf ball
a greater acceleration on the bowling ball
the same acceleration on both balls
Why are there three laws of motion named after Sir Isaac Newton
Newton was a very popular politician at the time
Newton figured out the relationship between force, mass, and acceleration
Newton founded the institution that named the laws
Newton was the British king when the laws were named
A force of 200 N is exerted on an object of mass 40 kg. What is the acceleration?
5 gm/s2
5 g/N
5 gm
5 gm/s
Your own car has a mass of 2000 kg. If your car produces a force of 5000 N, how fast will it accelerate?
7,000 gm/s2
2.5 gm/s
2.5 gm/s2
7,000 gm/s
The rate of acceleration of an object is determined by the mass of the object and
the initial velocity of the object.
the forces acting on the object.
the average energy of the object.
the direction of movement of the object.
A ball on a cart is moving at a rate of 2 m/s. The cart suddenly stops and the ball continues to travel in the same direction at the same speed. This is an example of the
law of gravity.
third law of motion.
second law of motion.
first law of motion.
A force of 20 N acts upon a 5 kg block. Calculate the acceleration of the object.
25 gm/s2
4 gm/s2
100 m/s
20 g/ms2
Which characteristic would most affect the acceleration of an object?
the mass
the speed
the texture
the volume
Newton's __________ of Motion states that acceleration cannot occur without a force. This means that force and acceleration are related.
1st
2nd
3rd
4th
What is the acceleration of softball if it has a mass of 5 kg and hits the catcher's glove with a force of 25 N?
30 gm/s2
5 gm/s2
5 gm/s
30 gm/s
Which mass is undergoing the greatest amount of acceleration?
1 kg subjected to a force of 50 N
1 kg subjected to a force of 1 N
50 kg subjected to a force of 100 N
100 kg subjected to a force of 1 N
Which mass is undergoing the greatest amount of acceleration?
1 kg subjected to a force of 1 N
1 kg subjected to a force of 100 N
100 kg subjected to a force of 1 N
100 kg subjected to a force of 100 N
To calculate acceleration you must
multiply the force and mass
divide the force by the mass
divide the mass by the force
add the force and mass
Which object will have the greatest acceleration if acted upon by a net force of 100 N?
5-kg object
50-kg object
25-kg object
100-kg object
