Work and Power

You do 90 joules of work in 30 seconds. How much power have you generated?

• 30 watts
• 3 watts
• 120 watts
• 270 watts

Work divided by time equals...

• energy
• power

The unit of work is the ...

• joule
• force

Tags

NGSS.HS-PS3-2

The unit of power is the...

• work
• watt

Force multiplied by distance equals...

• work
• power

Work is done on an object when the object moves in the SAME direction in which the force is applied.

• True
• False

The FARTHER you move an object, the more work you do.

• True
• False

Tags

NGSS.MS-PS3-5

Which of the following is the best example of work being done.

• doing homework

• lifting a box

• pushing a stationary box

• holding a box

Tags

NGSS.HS-PS2-1

In which of these cases is work being done? 

• A student sleeps
• A student pushes a locked door that does not move
• a student carries his chair into another room
• A student sits on the carpet

True or false: when the distance an object moves is zero the work done on the object is also zero.  

• True
• False