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- 1. Multiple Choice
A force that opposes motion between any surfaces that are in contact.
gravity
acceleration
friction
direction
- 2. Multiple Choice
Which type of friction is shown in the picture?
rolling
fluid
static
sliding
- 3. Multiple Choice
Sanding wood with sandpaper will ______ the friction.
increase
decrease
- 4. Multiple Choice
Which type of friction is shown in the picture?
fluid
static
rolling
sliding
- 5. Multiple Choice
If the following objects were dropped from the same height, which one would hit the floor first?
- 6. Multiple Choice
Which type of friction is shown in the picture?
rolling
static
fluid
sliding
- 7. Multiple Choice
Adding oil will ________ friction on gear chains.
increase
decrease
- 8. Multiple Choice
Which type of friction is shown in the picture?
fluid
static
rolling
sliding
- 9. Open Ended
Give an example of a time when MORE friction is needed.
- 10. Open Ended
Give an example of a time when LESS friction is needed.
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