Work, Power, & Simple Machines

units of force are

• newtons

• grams

• joules

• meters

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

units for work are

• newtons

• joules

• meters

• seconds

Tags

NGSS.HS-PS3-2

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

What is the formula for work?

• Force = work x distance
• Distance = force x work
• Work = force x distance
• Work = force x mass

Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball?

• 25J

• 100J

• 4J

• 75J

Tags

NGSS.MS-PS3-4

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

• 8000J

• 8000N

• 4000J

• 2000J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane

Which is doing work?

• pushing a wall
• holding a box
• picking up a pencil
• sitting in a chair

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-PS3-3

A machine with a 5-N input force and a 25-N output force has a mechanical advantage of?

• 2

• 5

• 20

• 125