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- 1. Multiple Choice
Friction is an example of
contact force
non contact force
both of these
- 2. Multiple Choice
The direction of force of friction is always _____________ to the direction of motion.
same
opposite
unchanged
- 3. Multiple Choice
Without friction, an object in motion would never stop.
true
false
- 4. Multiple Choice
Which of these materials do you predict would have the MOST amount of friction?
metal
sand paper
tile
denim
- 5. Multiple Choice
The rougher the surface, the faster an object will travel over the surface.
true
false
- 6. Multiple Choice
How would the absence of friction affect a marble travelling on a long straight path?
the marble's speed would decrease
the marble would remain at a constant speed
the marble's speed would increase
the marble would stop immediately
- 7. Multiple Choice
When we rub our hands together ____________________.
frictional force works between them
our hands become warm
energy is released
all of the above
- 8. Multiple Choice
Objects that are smooth have LESS friction than objects that are rough.
true
false
- 9. Multiple Choice
Imagine you decide to jump our of an airplane. Which force is going to pull you down towards earth?
fluid friction
static friction
gravity
the wind from the airplane
- 10. Multiple Choice
True or False: If you push a box across a surface like ice with no friction, it will NEVER stop.
True: as long as it doesn't run into something it will keep going and going and going.
False: it will stop very quickly.
- 11. Multiple Choice
What is the unit called that measures force?
weight
Newton
meter
kilogram
- 12. Multiple Choice
What does friction produce?
light
sound
heat
gravity
- 13. Multiple Choice
The force that acts in the opposite direction of motion when two surfaces come in contact is called
gravity
friction
kinetic energy
electromagnetic force
- 14. Multiple ChoiceWhat is the net force?5 N45 N to the left5 N to the right45 N to the right
- 15. Multiple ChoiceWhat is a force?the PUSH or PULL on an objectThe MOTION an object createsThe objects HITTING one anotherGoing REALLY FAST
- 16. Multiple ChoiceWhat is the FORCE?5 N10 N400 N0 N
- 17. Multiple ChoiceForces that have a force of Zero (0).Balanced forceUnbalanced force
- 18. Multiple ChoiceThis is an example of what kind of force?Balanced ForcePushing ForceGravity ForceUnbalanced Force
- 19. Multiple ChoiceCalculate the net force of the object in the image shown.20N35N5N25N
- 20. Multiple ChoiceCalculate the net force shown in the diagram?6 N0 N3 N9N
- Answer choicesTagsAnswer choicesTags