Work and Power

How much work is being done with 200 N of force over 426 metres ?

• 85,200 J

• 45,620 J

• 90,480 J

• 62,329 J

If 150 Joules of work is needed to move a box 10 metres, what force was used?

• 1500 N

• 15 N

• 1.5 N

• 150 N

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

• doing homework

• lifting a box

• pushing a stationary box

• holding a box

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

Tags

NGSS.MS-PS3-5

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

• True
• False

You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?

• Yes, work was done

• No, work wasn't done

What would 54N be an example of?

• work

• power

• distance

• force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is an example of a force?

• Energy

• Power

• Pressure

• Weight

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The amount of work done in a certain amount of time is known as 

• work
• effort force
• resistance force 
• power

If you increase your work and decrease your time, you will have

• more power

• less power

• same amount of power

• power rating can not be determined