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- 1. Multiple Choice
Self-driving cars use lidar, radar and cameras to _________________ the world around them.
sense
listen to
feel
hear
- 2. Multiple Choice
How many levels of automation do driverless cars have?
10
4
5
6
- 3. Multiple Choice
What do you have to watch for when driving a car?
Astronauts
Fish
Other vehicles and people crossing the street.
Cars flying overhead.
- 4. Multiple Choice
What is effort (input) force?
the force one exerts on a machine
the force which an effort force must overcome in order to do work on an object via a simple machine.
the force the machine exerts on a object
the output work times the input distance
- 5. Multiple ChoiceHow much work is produced when 350 N is used to move a car 5 m (W=Fd)?70 J1750 J355 J175 J
- 6. Multiple ChoiceIf the weight of the block is 10N, how much force does one have to apply to lift it using this pulley (MA=2)?2N5N10N15N
- 7. Multiple Choice
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever (MA=Output Force/Input Force)?
1
10
100
1000
- 8. Multiple ChoiceA ramp.LeverInclined PlaneWedgeScrew
- 9. Multiple ChoiceMechanical Advantage: To drive objects apart.PulleyInclined PlaneWedgeWheel and Axle
- 10. Multiple ChoiceWhat type of simple machine is shown here?PulleyWheel and AxleLeverWedge
- 11. Multiple ChoiceMechanical Advantage: To reduce the friction of moving something.LeverInclined PlaneScrewWheel and Axle
- 12. Multiple ChoiceSomething similar to a see-saw that can lift an object.WedgeScrewLeverWheel and Axle
- 13. Multiple ChoiceMechanical Advantage: To move objects to a greater height.PulleyWedgeLeverInclined Plane
- 14. Multiple ChoiceMechanical Advantage: To hold things together or to lift an object.ScrewPulleyWedgeWheel and Axle
- 15. Multiple ChoiceWhich of the following does a simple machine do?allows the users to apply less force over a longer distancereduce the amount of force needed to do workchange the direction of the applied forceall of the above
- 16. Multiple Choice
The _____________ of a system focuses on what you do to the system to get the desired results.
Purpose
Input
Output
Processes
- 17. Multiple Choice
When multplying force by distance, you are trying to figure out how much _______ is needed.
efficiency
energy
effort
work
- 18. Multiple Choice
The pivot pointwhere the lever rests on is called it's __________.
fulcrum
axle
inclined plane
- 19. Multiple Choice
Mechanical Advantage calculates how work becomes more difficult with simple machines.
True
False
- 20. Open Ended
Explain the difference between work, force, energy, efficiency:
- 21. Multiple Choice
exerting a force on an object that causes the object to move some distance
work
power
mechanical advantage
efficiency
- 22. Multiple Choice
the amount of work you do when you exert one Newton of force to move the object one meter
joule
newton
meter
output force
- 23. Multiple Choice
a device that allows you to do work in a way that is easier
machine
compound machine
work
power
- 24. Multiple Choice
the force you exert on the machine
input force
output force
efficiency
mechanical advantage
- 25. Multiple Choice
the force the machine exerts on an object
input force
output force
efficiency
mechanical advantage
- 26. Multiple Choice
the percentage of the input work that is converted to output work
mechanical advantage
efficiency
joule
machine
- 27. Multiple Choice
a machine that utilizes two or more simple machines
compound machine
machine
wedge
screw
- 28. Multiple Choice
The 6 simple machines are...
Lever, nail, screw, pulley, wedge, wheel & axle
Hammer, inclined plane, screw, pulley, nail, wheel & axle
Lever, inclined plane, screw, pulley, wedge, wheel & axle
Inclined plane, diamond, pulley, wedge, metal, wheel & axle
- 29. Multiple Choice
Input and output forces are measured in...
Grams
Pounds
Newtons
Joules
- 30. Multiple Choice
____________________ is a force that opposes motion.
Angle
Twisting
Friction
Speed
- 31. Multiple Choice
Use the formula triangle for pressure.....What is the pressure resulting from a force of 50 N exerted over an area of 5 m2 is
100 N
0.1 N10 N/m20.1 Pa - 32. Multiple ChoiceLook at the pressure triangle. How do we calculate the area?f ÷ af x pp x ff ÷ p
- 33. Multiple ChoiceLook at the pressure triangle. How do we calculate the force?f ÷ af x pp x af ÷ p
- 34. Multiple Choice
What is Rube Goldberg's name now famous for
A fast food restaurant
Having a brother called Rubix
A science program on TV
Complex chain reactions completing simple tasks
- 35. Multiple Choice
Choose the technology used by the Egyptians to build the pyramids (there is more than one answer)
screwdrivers
ramps
levers
fulcrums
sleds
- Answer choicesTagsAnswer choicesTags