Apologia Physical Science Module 11

Work can be defined as a transfer of what?

• mass

• energy

• force

• motion

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the energy of motion called?

• kinetic energy

• potential energy

• thermal energy

• work

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which one of the following is NOT associated with an objects gravitational potential energy?

• its mass

• its speed

• the acceleration due to gravity

• its height relative to a reference level

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NGSS.MS-PS3-2

What kind of energy is stored in gasoline?

• chemical energy

• elastic potential energy

• nuclear energy

• thermal energy

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NGSS.MS-PS1-5

In which of the following is no work done?

• climbing stairs

• lifting a rock

• pushing a shopping cart

• work is done in all options

In which of the following is a force acting on an object doing no work?

• a machine is used to move the object

• the force is not in the direction of the objects motion

• the force is greater than the force of friction

• the object accelerates

What is a unit of work?

• joule

• newton/meter

• watt

• all of the above

What is the SI unit of power?

• joule

• newton

• N-m

• watt

What does the power of a machine measure?

• its rate of doing work

• its strength

• the force it produces

• the work it does

Knowing the input distance and the output distance of a machine, allows you to calculate which of the following?

• work

• actual mechanical advantage

• efficiency

• ideal mechanical advantage