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WorksheetsForce and Motion Review
Total questions: 32
Worksheet time: 17mins
Which of these would NOT change the velocity of an object?
The object speeding up as more force is applied.
The object slowing down as it is going up a hill.
The object maintaining constant speed and direction.
The object turning right.
Which is the force that acts whenever two surfaces or objects move past one another that can slow an object down because of its push in the opposite direction?
gravity
friction
velocity
opposite
Which of the following will definitely cause a change in the velocity of a parked car?
The car experiences an unbalanced force.
All forces acting on the car increase by 1 N.
All forces acting on the car decrease by 1 N.
The forces acting on the car are equal and balanced.
At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters.
Why did the salt shaker stop moving?
The salt shaker ran out of force.
The table exerts a force that is opposite to the salt shaker's motion.
The table absorbs force from the salt shaker.
All objects stop moving because their natural state is to be still.
A student makes a balloon cart to investigate how combined forces create motion. The student create a simple cart by attaching wheels to a small piece of cardboard. The student attaches a straw with a balloon on one end so that any air coming out of the balloon flows in one direction.
The student blows up the balloon, sets the cart on the tabletop, and lets go. Air flows out of the balloon and through the straw, but the cart does not move.
Which of these explains why the car does not move?
The force of gravity exceeds the other forces acting on the cart.
The forces pushing the cart forward were greater than the force of mass and gravity.
The force on the cart from the air in the balloon and the friction on the ties is balanced.
The cart experiences an unbalanced force from the air in the balloon and the friction on the tires.
Stability vs. Change: Select 5 actions that would CHANGE the motion of an object. (Not changing = stability)
start moving and stop moving
speed up and slow down
remains at rest
change direction (turn or go in a circle)
remain at a constant speed in a straight line
In soccer, players kick a soccer ball across a flat field. At practice one day, three soccer balls that have the same mass were rolling across the field. They were each kicked by a soccer player, but not from the same direction. Each soccer ball changed speed as a result of being kicked. Use the information in the diagram to answer the question.
Which soccer ball(s) experienced the strongest force when it was kicked? How do you know?
The purple soccer ball because it has the fastest ending speed.
The blue soccer ball because it takes a stronger force to slow something down than to speed something up.
The blue soccer ball because it changed speed the most.
The purple and yellow soccer balls because they gained force, while the blue soccer ball lost force.
Juno, Melissa, and Anna have skateboards that are the same mass. They were playing with their skateboards on a flat street when another skateboard came along and bumped their skateboards, but not from the same direction. Each skateboard changed speed as a result of being bumped. us the information in the diagram to answer the question.
Use the information in the passage and diagram to answer the question.
Which skateboard(s) experienced the strongest force when bumped? How do you know?
The green skateboard experienced the strongest force because it changed speed the most.
The green skateboard experienced the strongest force because it takes up a stronger force to slow something down than it takes to speed something up.
The red and brown skateboards experienced the same strength force because they both gained force, but the green skateboard lost force.
The red skateboard experienced the strongest force because it has the fastest ending speed.
Juan's dog Rolo likes to pull him on his skateboard in the neighborhood after school. Juan would like to design an investigation to calculate the difference in the amount of force needed for the dog to pull him on the skateboard.
What factors must Juan consider in his plan to ensure he can accurately demonstrate the relationship between force and mass?
Select three correct answers.
Juan must consider how he will measure force exerted by he and his brother on the skateboard.
Juan must consider how he will control his and his brother's masses to ensure they are equal.
Juan most be able to calculate the force the dog must exert to overcome the mass of Juan and the skateboard.
Juan must consider the surface that the skateboard rolls over to control friction for each trial.
Juan must consider how he will ensure constant speed of the skateboard for each trial.
Hannah just finished building a house of cards that stands four stories high. She is worried that it will fall down.
Which of the following statements is definitely true?
As long as nobody touches the house of cards, it will remain standing.
A house of cards is too fragile and must fall down eventually.
If no unbalanced force acts upon the house of cards, then it will remain standing forever.
If Hannah adds another card to the house of cards, then it will fall down.
A cylindrical object is at rest on a table. Assume that there is no friction. A student applies an unbalanced force on the object.
What will happen because of this unbalanced force?
The object will experience enough friction to keep it from moving.
The object will move in the direction of the unbalanced force.
The object will move in the opposite direction of the unbalanced force.
The object will remain at rest until a balanced force acts on it.
A cylindrical object is at rest on a table. Assume that there is no friction.
To balance the forces on the cylindrical object, the student removes the unbalanced force being applied to it.
What will happen immediately after this force is removed?
The object will begin to gain speed.
The object will begin to slow down.
The object will continue to move at a constant speed.
The object will be set in motion.
A shopping cart is at rest on the floor. Assume that there is no friction.
An unbalanced force is applied to the cart.
What will happen because of this unbalanced force?
The cart will move in the direction of the unbalanced force.
The cart will remain at rest until a balanced force acts on it.
The cart will experience enough friction to keep it from moving.
The cart will move in the opposite direction of the unbalanced force.
A shopping cart is at rest on the floor. Assume that there is no friction.
What will happen to the motion of the shopping cart immediately after the unbalanced force is removed?
The cart will begin to gain speed.
The cart will be set in motion.
The cart will continue to move at a constant speed.
The cart will begin to slow down.
Kara pushes her big brother on a swing at the playground. After he gets off the swing, her little brother gets on. Kara finds that it is easier to push her little brother than it was to push her big brother.
What is the most likely reason for this?
A smaller mass always moves faster than a larger mass.
A smaller mass always moves slower than a larger mass.
Less force is needed to move a large mass the same distance.
More force is needed to move a larger mass the same distance.
Penny has two dogs named Fluffy and Butch, shown below.
Penny also has two identical wagons. She puts one dog in each wagon and pushes each wagon with the same amount of force. The wagons travel in a straight line on level ground.
Which of the following statements best compares the motion of the two wagons?
The wagons will both move in the same way.
Fluffy's wagon will move faster.
Butch's wagon will move faster.
Fluffy's wagon will stop first.
The three skiers were racing across flat, smooth snow. The skiers in yellow and purple sweaters have the same mass, which is more mass than the skier in the red sweater. Each skier was bumped by another skier, but not from the same direction. Use the information in the diagram to answer the question.
Use the information in the passage and diagram to answer the question.
Which skier(s) experienced the strongest force when bumped? How do you know?
All three skiers experienced the same force because they changed speed the same amount.
The purple skier; he is more massive and has the fastest ending speed.
The yellow skier; it takes a stronger force to slow down a more massive object than to speed it up.
The yellow and purple skiers; they have more mas then the red skier, but changed speed by the same amount.
A student pushes a hollow ball with a small amount of force causing it to roll quickly across the room. The student then pushes a solid ball with the same amount of force.
Which statement demonstrates an understanding of force and its effects on an object?
The force on both balls was the same; therefore each ball pushes back with the same amount of force.
The force on both balls was the same; however each ball pushed back with a different amount of force.
The solid ball pushes back with greater force than the hollow ball, because the solid ball has greater mass.
The hollow ball pushes back with a greater force than the solid ball, because the solid ball moved faster and further.
Which statement best describes the force arrows and velocity tails shown above?
Image A shows stronger force than image B. Image C shows a lower speed than image D.
Image A shows a weaker force than image B and Image C shows a higher speed than image D.
Image A shows the same strength force as Image B. Image C shows a lower speed than Image D.
Image A shows the same strength force as Image B. Image C shows a higher speed than Image D.
The illustrations show soccer balls of different masses being kicked with equal force.
Which ball will have the greatest acceleration?
Curling is a sport in which players push large stones across smooth ice. Three curling stones were sliding across the ice. The yellow and purple curling stones are the same mass, and they are both more massive than the gray curling stone. A player pushed each curling stone, but not from the same direction. Use the information in the diagram to answer the question.
Use the information in the passage and diagram to answer the question.
Which curling stone(s) experienced the strongest force? How do you know?
All three stones experienced the same force because they changed speed by the same amount.
The purple stone; it has more mass and the fastest ending speed.
The yellow stone; it takes a stronger force to slow down a more massive object than to speed it up.
The yellow and purple curling stones experienced the strongest force because they are both more massive than the gray stone and they changed speed by the same amount.
Select each correct answer. More than one answer may be correct.
Joe has a large collection of tools, which weighs 45kg. He needs to transport the tools from the top of a hill to the bottom along an existing straight path. He wants to design a vehicle that will roll down the hill, carrying the tools.
Which of the following statements must be true about the final design of the vehicle?
it must be able to support a load of 45kg
it must travel in a straight line
it must have a working engine
it must roll without a large amount of friction
A student is developing and testing a new design of a model car on a model track. She makes a graph to show the results of her test.
How can the student develop a solution to increase the kinetic energy of the model car?
She would have to find a way to decrease the mass of the car.
She would have to add hills and turns to the same length of track.
She would have to find a way for the car to travel a longer ramp in the same amount of time.
She would have to find a way to increase friction between the wheels of the car and the track.
Engineers are designing a new car and they need to test their ideas by modeling crashes with different types of trucks. They are using a more massive garbage truck for Crash 1 and a less massive pickup truck for Crash 2. The green test car has the same mass in both crashes.
In which case did the green test car experience a stronger force? How do you know?
Crash 1: the force on the garbage truck was stronger in this crash, so the force on the green test car was also stronger.
There is no force on the green car. In each crash, only the truck experienced a 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 green test car. It only gives information about the force on the trucks.
Scientists are modeling different ways a satellite and an asteroid might crash into each other. They used the same satellite in both crashes, but two different asteroids--a black one with more mass for Crash 1 and a gray one with less mass for Crash 2.
In which crash does the satellite experience a stronger force? How do you know?
It was the same force in both crashes; the asteroid changed speed by the same amount in each crash, so the force on the satellite was the same each time.
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. It only gives information about the force on the asteroids.
There is no force on the satellite. In both crashes, only the asteroid experiences a force.
The balls have different masses but travel with the same speed.
Which ball will hit the wall with the greatest amount of kinetic energy?
the ball with mass 0.145 kg
the ball with mass 0.046 kg
the ball with mass 0.624 kg
the ball with mass 0.057 kg
Jeff likes to race his remote-controlled cars on a track near his home. He designs a crash barrier to stop the cars from running off the track. Jeff calculates that it will take 150 N of force to stop a remote-controlled car racing at full speed.
Which must be true in order for the barrier to work as designed?
The barrier must not apply any force to the remote-controlled card during a collision.
The barrier must be able to withstand a force of at least 150 N during a collision.
The barrier must produce exactly 150 N of force when less than 150 N of force is applied to it.
The barrier must produce more than 150 N of force when exactly 150 N of force is applied to it.
A polar bear walks on sea ice t hunt prey living in the water.
Which statement best describes an interaction between the polar bear and the sea ice?
The force applied by the polar bear is less than the force applied by the sea ice.
The force applied by the polar bear is greater than the total force applied by the sea ice.
The polar bear applies no force to the sea ice because the sea ice applies a force to the polar bear.
The polar bear applies a force to the sea ice, and the sea ice exerts an equal and opposite force on the polar bear.
Four members of a family are riding their bikes. The mass and speed of each rider are shown below.
Which of the riders has the greatest amount of kinetic energy?
Ichiro
Satoru
Koji
Yumiko
Susan gently pushed the tip of her finger against the eraser on her pencil and the pencil does not move.
Which of the following figures best illustrates the interaction of forces between Susan's finger and her pencil?
A student is sitting at rest in a chair. How does the force that the student exerts on the chair compare to the force the chair exerts on the student?
the same force and the same direction
the same force but the opposite direction
a greater force but the opposite direction
a lesser force but the same direction
Select each correct answer. More than one answer may be correct.
Dylan kicks a ball at a barrier, which is built to withstand an applied force of 120 newtons. The ball knocks down the barrier, but the ball is not damaged.
What can be concluded based on the given scenario?
more force was applied to the barrier than to the ball
no force was applied to the ball
more then 120 newtons of force was applied to the barrier
more force was applied to the ball then to the barrier
more than 120 newtons of force was applied to the ball
