# Work, Force, Power, & Mechanical Advantage 2: Question Preview (ID: 13798)

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Force x distance is the formula for - |
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a) work | b) inertia | c) power | d) force | |

The correct equation for power is - |
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a) force x distance | b) work/time | c) mass/volume | d) work output/work input | |

The amount of work completed in a certain amount of time is |
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a) mechanical advantage | b) mechanical efficiency | c) power | d) work | |

What is being performed when a force is used to move an object a distance? |
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a) work | b) force | c) motion | d) power | |

A car manufacturer reduces the mass of a car 250kg. If the new design is identical to the old design, how will the new car compare to the old car? |
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a) It will have a greater gravitational attraction to the road | b) It will require more fuel to operate | c) It will release more gas emissions | d) It will need less force to move. | |

To complete a project, 200,000 Joules of work are needed. the time taken to complete the project is 20s. How much power is needed? |
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a) 0.0001 J/s | b) 200,020 J/s | c) 10,000 J/s | d) 1,000,000 J/s | |

The acceleration of a dog sled depends on the force provided by the dogs and the - |
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a) mass of the sled | b) friction of the sled | c) weight of the sled | d) volume of the sled | |

A student pushes a grocery cart with a 32.1N moving it 15.7m. How much work was done? |
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a) 504.0J | b) 2.0J | c) 0.5J | d) 561.8J | |

the amount of work necessary to move a dirt pile was 620J. The amount of force used to move the dirt pile was 28.2N. How far was the dirt pile moved? |
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a) 17,484m | b) 28m | c) 22m | d) 13,640m | |

If it takes a force of 2000N to move a crate at a rate of 3.4 m/s/s, what is the mass of the object? |
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a) 294.1kg | b) 13,600kg | c) 6,800kg | d) 588.2kg | |

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