Simple Machines and Work

Work is done when you push a book across a table.

• True

• False

Doing work faster requires more power.

• True

• False

Machines always decrease the force needed to do a job.

• True

• False

A well-oiled, low-friction machine can be 100 percent efficient.

• True

• False

A doorknob is a simple machine.

• True

• False

A loading ramp makes it easier to lift a load.

• True

• False

Tags

NGSS.MS-ETS1-1

How are force and motion related to doing work?

• Force and motion are unrelated to work.

• Work is done when force causes motion.

• Motion occurs without any force involved.

• Force is applied but no work is done.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Work is a ____________________ of energy.

• transfer

• source

• form

• type

Tags

NGSS.HS-PS3-3

____________________ is the transfer of energy to an object by a force that makes an object move in the direction of the force.

• work

• heat

• power

• momentum

Tags

NGSS.MS-PS3-5

What is work? _______ is the transfer of energy to an object by a force that makes an object move in the direction of the force.

• Work

• Power

• Energy

• Force

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5