Driving a car 100 m requires the same amount of ______________ as pushing the same car 100 m by hand.
  • power
  • power and energy
  • time
  • work
Work is done anytime a force is applied over a period of time.
  • true
  • false
What is the name for the turning force of a lever?
  • fulcrum point
  • horsepower
  • netwon
  • torque
What is the name of the pivot point in a lever?
  • fulcrum
  • horsepower
  • newton
  • torque
What is the IMA of this pulley system?
  • 4
  • 2
  • 5
  • 3
Which of the following objects is an example of a third-class machine?
  • tweezers
  • wheelbarrow
  • crowbar
  • bottle opener
A screw is what type of simple machine?
  • inclined plane
  • lever
  • wheel and axe
To move a piano that weighs 3125 N onto a truck, you have to push with 865 N of force along a 6.3 m long ramp. The truck is 1.5 m above the ground. What is the input distance?
  • 6.3 m
  • 3125 N
  • 1.5 m
  • 865 N
A screw with a shallow thread will be
  • easier and faster to put in than a screw with a steep thread
  • easier but slower to put in than a screw with a steep thread
  • more difficult and slower to put in than a screw with a steep thread
  • more difficult but faster to put in than a screw with a steep thread
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