Work Power & Machines

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

A 5000N block is lifted 10 m. How much work was done?

• 50000 J
• 5000 J
• 500 J
• 50 J

Tags

NGSS.HS-PS3-1

What is power?

• transfer a force through a distance
• the rate of speed 
• the rate of work being done
• transfer of space over time

What is an example of an inclined plane?

• crane
• slide
• bike
• see-saw

What is an example of a wheel and axle?

• ax
• light bulb
• skateboard ramp
• bus tire

What is an example of a pulley?

• slide
• flag pole
• ax
• chapstick

What is an example of a screw?

• arm
• ax
• light bulb
• ramp

What is a screw?

• means attracted to a magnet
• an inclined plane that is wrapped around an axle
• stiff bar that rests on a fulcrum
• made of 2 inclined planes that are back to back

What is a lever?

• made of 2 inclined planes that are back to back
• means attracted to a magnet
• stiff bar that rests on a fulcrum
• made of 2 inclined planes that are back to back