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

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**Force x distance is the formula for -**

a) work

b) inertia

c) power

d) force

**The correct equation for power is -**

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**

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?**

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?**

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?**

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 -**

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?**

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?**

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?**

a) 294.1kg

b) 13,600kg

c) 6,800kg

d) 588.2kg

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