Work and Power and Machines

What is the unit used to measure Power?

• Joule
• Watt
• Newton
• Pascal

Force X Distance = _______?

• Work
• Power
• Energy
• Force

A _____ is a fixed bar that allows us free to move around a fixed point known as a fulcrum.

• pulley

• inclined plane

• lever

If you use a crowbar to get the lid off of a bucket, what simple machine are you using?

• Inclined Plane
• Pulley
• Wheel and Axle
• Lever

What type of simple machine is found on the cap of a pickle jar?

• lever
• inclined plane
• pulley
• screw

What is the unit used to measure work?

• Joule
• Watt
• Newton
• Pascal

Tags

NGSS.MS-PS3-5

Which of these is an example of a wedge (an inclined plane that moves)?

• skateboard

• broom

• stairs

• butter knife

Consists of two circular objects; a central shaft and a wheel.

• wheel and axle
• screw
• pulley

Work/Time = ________?

• Force
• Speed
• Velocity
• Power

Calculate the amount of work done if you use a 100N force to push a 50 kg box 5 m across the kitchen floor. 

• 250 J 
• 500 J
• 5000 J
• 50,000 J

Tags

NGSS.MS-PS2-2