Physical Science: Work and Machines

True or false
You do work only when you exert a force on an object and move it

• true
• false

Two factors that determine work are

• size of the force, and distance
• size of the force, and type of force
• mass, and distance

units of force are

• netwons
• grams
• joules
• meters

units for work are

• netwons
• joules
• meters
• seconds

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

work transfers

• sweat
• energy
• velocity
• effort

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

45J of work were done on the object that moved 5M. How much force was applied to the object?

• 8N
• 225N
• 9N
• 0N

If the mystery machine moves 100 meters how much work is done?

• 130,000,000J

• 70,000J

• 100,000J

• 30,000J

If Jay Loppy pushes his van 20 meters how much work is done?

• 2,000J

• 40,000J

• 10,000J

• 800,000J

A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.  

• wedge
• screw
• lever
• inclined plane