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Motion Final Test

Motion, Forces, and Simple Machines Final Assessment

QuestionAnswer
What is an example of a pulley? A crane
What is an example of a wedge? A knife
What is an example of an inclined plane? A ramp
What is an example of a screw? A jar lid
What is an example of a wheel and axel? A door knob
What is an example of a lever? A rake
Work is measured in which unit? joule
A zipper is an example of which simple machine? A wedge
A flag pole uses which simple machine? A pulley
A sidewalk cut at a crosswalk is an example of which simple machine? An inclined plane
What is a fulcrum? A fixed point that a lever rotates around
There are 3 types of pulleys. Out of compound, fixed, moveable, and adjustable pulleys, which is NOT one of the three types of pulleys? Adjustable
Force is measured in what unit? Newton
Weight is the measure of the force of what on an object? Gravity
A Newton is a measure of what? Force
What happens to force when it transfers from wheel to axel? force magnifies
What is the equation for work? Work (joules) = Force (Newtons) x Distance (meters)
What is the equation for force? Force (Newtons) = Mass (grams) x acceleration (meters/seconds)
What generalization can you make about the distance over which you move an object and the amount of work that it takes to move that object? The longer the distance, the less work needed.
Why are highway accidents more likely on a freshly wet surface? Friction and traction decrease
Define mechanical advantage. Mechanical advantage is the ratio between output force and input force.
What is ideal mechanical advantage? When mechanical advantage has no friction and works under ideal conditions.
True or False: Machines make work easier by changing the force you exert, the distance over which you exert force, and the direction you exert force. TRUE
What is input force? The force you exert on a machine.
What is output force? The force a machine exerts.
Created by: traber
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