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Ch. 5, 6, and 8

Quiz by Tracy

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21 questions
Show answers
  • Q1
    Samantha uses 50 N of force to move a dresser 10 meters. How much work did she do?
    5 J
    500 J
    40 J
    60 J
    30s
    Edit
    Delete
  • Q2
    Mechanical advantage of a machine is the ratio of
    work x power
    force/distance
    input force/output force
    output force/input force
    30s
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    Delete
  • Q3
    Which one is an example of a 2nd class lever?
    lifting a barbell
    hammer removing a nail
    seesaw
    wheelbarrow
    30s
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    Delete
  • Q4
    The Law of Inertia is Newton's ___________________.
    4th law
    2nd law
    3rd law
    1st law
    30s
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  • Q5
    A seesaw is an example of a _______________.
    1st class lever
    2nd class lever
    3rd class lever
    4th class lever
    30s
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  • Q6
    If an incline plane is 10 meters high with a length of 30 meters, what is the mechanical advantage?
    3
    40
    20
    300
    30s
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  • Q7
    What uses a combination of two or more simple machines?
    compound machine
    complex machine
    30s
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  • Q8
    What is an example of a wedge?
    fulcrum
    ramp
    screwdriver
    axe
    30s
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  • Q9
    What is not an example of acceleration?
    moving faster
    going slower
    turning a corner
    resting
    30s
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  • Q10
    It took Gary 30 seconds and 75 Newtons of force to move a box 5 meters. How much power did he exert?
    110 W
    2 W
    450 W
    12.5 W
    30s
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    Delete
  • Q11
    Work has been done when _____________.
    force and distance are in opposite directions
    force and distance are in the same direction
    30s
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    Delete
  • Q12
    What is the amount of work completed in a certain period of time called?
    mechanical advantage
    power
    efficiency
    motion
    30s
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  • Q13
    An object will fall faster when the acceleration is lower due to gravity.
    True
    False
    30s
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    Delete
  • Q14
    How many hours will it take a car to travel 800 miles if their average speed is 50 mph?
    16 hours
    6.25 hours
    15 hours
    12 hours
    30s
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    Delete
  • Q15
    250,000 J of work is needed and it will take 50 seconds to complete the project. How much power is needed? p = w / t
    0.0002 J/s
    50,000 J/s
    500 J/s
    5000 J/s
    30s
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    Delete
  • Q16
    An 8th grader rides a bike at an average speed of 5 miles per hour. If he rides for 3 hours how far can he travel?
    0.6 miles
    8 miles
    15 miles
    1.67 miles
    30s
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    Delete
  • Q17
    A mover pushes a crate with a mass of 22 kg at a speed of 2.8 m/s/s. How much force does the mover use to push the crate?
    7.85 N
    24.8 N
    61.6 N
    0.13 N
    30s
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    Delete
  • Q18
    Which law explains why we need to wear seatbelt?
    1st
    3rd
    4th
    2nd
    30s
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  • Q19
    Which law states that for every action there is an equal and opposite reaction?
    4th
    3rd
    2nd
    1st
    30s
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  • Q20
    A mom pushes a stroller with 23 N of force moving at 18 meters. How much work was done?
    1.28 J
    414 J
    0.78 J
    41 J
    30s
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