Work and Power

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

Work is done when a weightlifter holds a barbell still above his head.

• 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.HS-PS2-1

what would 1m be an example of?

• work

• power

• time

• distance

what would 14J be an example of?

• work

• distance

• time

• force

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

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