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- 1. Multiple Choice
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
- 2. Multiple Choice
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.
- 3. Multiple Choice
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
- 4. Multiple Choice
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.
- 5. Multiple Choice
Speed in a particular direction
force
velocity
motion
- 6. Multiple Choice
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.
- 7. Multiple Choice
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.
- 8. Multiple Choice
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.
- 9. Multiple Choice
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.
- 10. Multiple Choice
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.
- 11. Multiple Choice
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.
- 12. Multiple Choice
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
- 13. Multiple Choice
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.
- 14. Multiple Choice
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
- 15. Multiple Choice
The moment when two objects hit each other
Force
Speed
Collision
- 16. Multiple Choice
A ___________ is required to change the velocity of an object.
force
larger mass
smaller mass
- 17. Multiple Choice
A stronger force can cause a greater change in
direction.
speed.
velocity.
mass.
- 18. Multiple Choice
The amount of matter in an object is called its...
pressure
weight
mass
force
- 19. Multiple Choice
If the same strength force is exerted on two objects, the object with ________ mass will have a _________ change in velocity.
less, smaller
more, greater
more, smaller
less, shorter
- 20. Multiple Choice
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.
- 21. Multiple Choice
In order to get an object to speed up, which direction does the force need to be exerted?
Same direction as its motion
Opposite direction as its motion
Any direction as its motion
The direction does not matter, only the strength of the force matters
- 22. Multiple Choice
In order to get an object to slow down, which direction does the force need to be exerted?
Same direction as its motion
Opposite direction as its motion
Any direction as its motion
The direction does not matter, only the strength of the force matters
- 23. Multiple Choice
During a collision, what is true about the strength of the forces exerted on both objects?
They are the same strength
The object with more mass exerts a stronger force
The object that was moving faster exerts a stronger force
The strength of the force depends on the material that the object is made out of
- 24. Multiple Choice
During a collision, what is true about the direction of the forces exerted on both objects?
The are in the opposite direction
They are in the same direction
The direction depends on the mass of the objects
The direction depends on the speed of the objects
- 25. Multiple Choice
Which of the following changes in motion requires more force to be exerted?
to get an object to speed up
to get an object to slow down
to get an object to change directions
As long as the amount of change in velocity is the same, it requires the same amount of force to cause an object to speed up compared to slow down.
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