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- 1. Multiple Choice
A tire hanging from a tree is at rest. The force of gravity is pulling down on the tire. Another force, called tension, is pulling up on the tire. Tension is the pulling force that is transferred along the length of a string or rope.
If the force of tension is equal to the force of gravity, then what will happen to the tire?
The tire will accelerate upward.
The tire will swing toward the left.
The tire will remain at rest.
The tire will accelerate toward the ground.
- 2. Multiple Choice
Leah watches a toy car move across a table at a constant speed. The car moves across the table in one direction and falls off the other side. Leah decides to try another situation. She watches the car move across the table at a constant speed, then when it reaches the other side of the table, her friend Joey pushes the car in the other direction. The car moves back to Leah.
Based on Leah's informal experiment, what forces cause the car to change direction?
balanced forces from Joey pushing the car
unbalanced forces from Joey pushing the car
unbalanced forces from Leah watching the car
balanced forces from the car moving across the table
- 3. Multiple Choice
When starting to slide down a waterslide, why would a person push on the sides of the slide?
Pushing on the slide does not do anything for the person.
The person wants the slide to move
The person is using the slide to make himself move.
The person is trying not to get wet.
- 4. Multiple Choice
Bryan and Alyssa are playing tug-of-war against Daniel and Maria. Bryan and Alyssa are exerting a combined force of 10 N. Daniel and Maria are exerting 12 N of force.
Which of the following has resulted?
an unbalanced force moving everyone in Bryan and Alyssa's direction
a balanced force leaving everyone in the same place
an unbalanced force moving everyone in Daniel and Maria's direction
a balanced force moving everyone in Daniel and Maria's direction
- 5. Multiple Choice
An object that is moving will stop moving when
the force that is making it move stops pushing it.
it has used up all its momentum.
it has stopped speeding up.
something pushes or pulls it to a stop
- 6. Multiple Choice
A toy helicopter is flying straight ahead. A fan is blowing air toward the helicopter's right.
When the helicopter flies past the fan, the fan will push the helicopter toward the helicopter's right. Which of the following must happen when the helicopter flies past the fan?
the direction of the helicopter's motion will change
the helicopter will stop moving
the helicopter will speed up
the helicopter will slow down
- 7. Multiple Choice
Balanced forces will cause an object to move at a constant speed or to remain at rest. Which of the following graphs shows this situation?
- 8. Multiple Choice
If an object is moving at a constant speed in one direction, what is needed to change its speed or direction?
a long period of time
an unbalanced force
a short period of time
a balanced force
- 9. Multiple Choice
An example of an unbalanced force is
a bridge.
a roller coaster going down the first drop.
a car parked in a garage.
a tug of war game in which no one wins.
- 10. Multiple Choice
Watch the video clip of an astonaut on the moon dropping a hammer and feather.
Why does the hammer and feather drop at the same rate on the moon?
There's no gravity on the moon
There's some gravity on the moon, but there's no air resistance
There's air resistance on the moon
This is the same result if a hammer and feather were dropped at the same time on Earth
- 11. Multiple Choice
An object's motion changes
only if the object is at rest when a force acts upon it.
only when an unbalanced force is applied to the object
only when a balanced force is applied to the object
when there are no forces acting upon it.
- 12. Multiple Choice
Another name for air resistance is...
Buoyancy
Streamline
Gravity
Drag
- 13. Multiple Choice
The larger the surface area of the moving object, the ___________ air resistance there is.
Less
More
Longer
Quicker
- 14. Multiple ChoiceFriction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- 15. Multiple ChoiceWhat type of friction is not moving?staticslidingfluidrolling
- Answer choicesTagsAnswer choicesTags