Work Review

What is work in science?

• having a job

• using a force to make an object move

• a push or a pull

• stored energy

How do you calculate work? (W = ?)

• force + distance

• force - distance

• force x distance

• force $\div$  distance

Mr. Ertekin used 20N to move a box 4m. How much work did he do?

• 24 J

• 5 J

• 16 J

• 80 J

A light bulb does 100 J of work in 10 seconds. Calculate the power used.

• 110 W

• 10 J

• 10 W

• 90 W

_____ is the ability to do work or cause change.

• Work

• Energy

• Force

• Power

How much energy is expended when a 10.0 kg box is moved 2.0 m?

• 20.0 J

• 5.0 J

• 0.20 J

• 2.5 J

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

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

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