Work Review

Work can be defined as

• a force exerted on an object

• a push or pull exerted on an object

• movement of an object without a force

• a force exerted on an object that causes it to move

Tags

NGSS.MS-PS3-5

Units of force are...

• Newtons

• Grams

• Joules

• Meters

Units of work are...

• Newtons

• Grams

• Joules

• Meters

Tags

NGSS.MS-PS3-4

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

What is the formula for work?

• Force = work × distance

• Distance = force × work

• Work = force × distance

• Work = force × mass

Fred kicks a ball with a force of 20N to George, who is 5M away.

How much work was done to the ball?

• 25 J

• 100 J

• 4 J

• 75 J

Tags

NGSS.MS-PS3-5

If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?

• 8000 J

• 8000 N

• 4000 J

• 2000 J

Tags

NGSS.MS-PS2-2

You do work against gravity when you walk up some stairs.

• True

• False

Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit?

• 0.5 m
• 2 m
• 4 m
• 10 m

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

NGSS.MS-PS2-4

Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who did more work?

• Bobby

• Carol

• They did the same amount of work

• Not enough information

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4