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- 1. Multiple Choice
Friction is a force that acts in a(n) ___________ direction relative to a moving object.similaroppositeparallelperpendicular - 2. Multiple ChoiceWhat is the unit that measures force?WeightNet forceNewtonKilogram
- 3. Multiple ChoiceWhat type of friction acts on an object that is not yet moving?StaticDynamickineticRolling
- 4. Multiple ChoiceThe wheels on a moving skateboard most likely experience ____________.Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 5. Multiple ChoiceThese swimmers are most likely experiencing _________.Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 6. Multiple ChoiceAs the child moves down the slide, they mostly experience the effect of ___________.Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 7. Multiple ChoiceHow would the absence of friction affect a marble traveling on a long, straight path?The marble’s speed would decrease.The marble’s speed would increase.The marble would stop immediately.The marble would remain at a constant speed.
- 8. Multiple ChoiceWhich of the following is an example of rolling friction?pushing a box across the floorriding a bike down a hilla hockey player skidding to a stopa soccer player making a slide tackle
- 9. Multiple Choice
Two factors affecting the magnitude of the force of gravity between 2 objects are...
mass and distancemass and volumedistance and weightweight and mass - 10. Multiple ChoiceAs mass increases, what happens to the gravitational force?It increases.It decreases.It stays the same.It acts as a 3rd degree derivative function.
- 11. Multiple ChoiceAs the distance between 2 objects increases, what happens to gravitational force?It increases.It decreases.It stays the same.Only Mr. Silvio knows what will happen.
- 12. Multiple ChoiceWhich of the following will not change in different gravitational fields?weightforcemasspounds
- 13. Multiple ChoiceAn object is falling but it is not accelerating. What do you know?Gravity is stronger than air resistance.Air resistance is stronger than gravity.Air resistance is equal to gravity.The forces of air resistance and gravity are unbalanced.
- 14. Multiple Choice
When does a falling object experience balanced forces?
When it reaches terminal velocityDuring free fallWhen it first starts to fallWhen it bounces up after hitting the ground - 15. Multiple ChoiceWhat is the rate at which Earth's gravity accelerates objects in free fall?9.8 m/s23.14159 km/hr/s13.7 m/s242 km/h/s
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