8.2 What is a machine

 Something that makes work easier

• money

• time

• machine

• none of these

How does a machine make work easier?

• by costing more

• by using several people

• by lowering the size and direction

• by increasing the size and direction

Tags

NGSS.MS-PS2-1

People usually use simple machines every day

• true

• false

What type of simple machine can you use to remove a lid from a paint can?

• tire

• screwdriver

• broom

• wheel

The work you do on a machine is called the

• Work input

• work output

The force you apply to the machine to do the work is the

• input force

• output force

The work done by the machine on another object is called

• work output

• work input

What is the formula for work

• w = fxd

• w = gxt

• w = dxd

• none of these

Work is measured in ______, which is the basic SI unit for energy

• kilograms

• newtons

• meters

• joules

Tags

NGSS.HS-PS3-1

Machines lower the force that is needed to do the same work by increasing the distance the force is applied

• true

• false

Tags

NGSS.MS-ETS1-1