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- 1. Multiple Choice
______________________ is the force that resists the motion of two surfaces that are touching.
gravity
friction
force
non-contact
- 2. Multiple Choice
What two forces hold an object in place.
gravity
weight
contact force
static friction
- 3. Multiple Choice
A person skiing down a hill is an example of ______________ friction.
static
sliding
rolling
fluid
- 4. Multiple Choice
How can you reduce the amount of friction between 2 objects?
Increase the gravitational force.
Increase the amount of force put on the objects.
Reduce the amount of contact between the two surfaces.
Add more weight to the objects.
- 5. Multiple Choice
A person using a parachute is an example of ______________ friction.
static
sliding
rolling
fluid
- 6. Multiple Choice
___________________ is an object's ability to resist a change in motion.
gravity
force
inertia
weight
- 7. Multiple Choice
An object that is not moving is an example of _____________ friction.
static
rolling
sliding
fluid
- 8. Multiple Choice
Why is it easier to roll an object than it is to slide it?
less surface area
more surface area
more aerodynamic
it is heavier
- 9. Multiple Choice
Which type of force is always acting in the opposite direction of an object's motion?
gravity
contact force
noncontact force
air resistance
- 10. Multiple Choice
When friction is increased an object's speed _______________.
increases
decreases
stays the same
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