Work or Not Work

This kid drags your bookbag around the room. We don't know whose kid it is or how he got in, but man is he determined to take your bookbag...somewhere.

Has work been done? (a)   How do you know? (b)  

• Yes.

• No.

• Force was applied and an object moved

• There was no movement

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Work is done when an object has been subjected to ​ (a)   and it then ​ (b)   . No movement, ​ (c)  

• power is converted into Newtons

• an object stays in place

• force

• moves

• no work

• light

F = ma W = Fd A man reels in what he thinks is a fish. He estimates it has a mass of 3 Kg. He starts reeling at a rate of 5 m/s². He thinks his line is out 7 meters. Force: ​ (a)   Work: (b)  

• 105 N

• 525J

• 105 J

• 525 N

• 15 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

This is how some of y'all look when you hear an airplane go by. Assuming you're sitting by the window:

(1) Has work been done? (a)  

(2) How do you know? (b)  

• Yes.

• Force was applied, and an object moved

• There was no movement

• No.

Tags

NGSS.MS-PS2-2

We can only say that there is work done when,

• There is a displacement and the force causes that displacement.

• There is no displacement but there is force existing.

• There is neither displacement nor force.

• There is displacement even with or without force.

What is the formula for work?

• W= Fd

• W=F/d

• W= md

• W=d/f

If you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J

• 30 J

• 120 N

• 30 N

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

Calculate work: A 100 Newton force is applied to move a 15 kg object a distance of 5 meters?

• 20 Joules

• 75 Joules

• 500 Joules

• 1500 J

It took 500 Newtons of force to push a car four meters. How much work was done?

• 2000 J

• 125 J

• 0.008 J

• 500 J

Tags

NGSS.HS-PS2-1