Work and Machine

Using the scientific Definition, Which statement is always true of work

• It is difficult

• it involves levers

• it is done with a machine

• it involves a transfer of energy

Tags

NGSS.MS-PS3-5

Which is done by a Machine

• increase velocity

• change force direction

• increase work

• increase force

Which Factor increases as the efficiency of a machine increases

• Work input

• work output

• friction

• input force

Tags

NGSS.MS-ETS1-1

What term indicates the number of times a machine multiplies the input force

• efficciency

• power

• resistance

• Mechanical advantage

Tags

NGSS.MS-PS2-1

Which is not a simple Machine

• wheel and axle

• wedge

• bicycle

• Pulley