Work, Power and Simple Machines

What is the unit used to measure Power?

• Joule
• Watt
• Newton
• Pascal

Force X Distance = _______?

• Work
• Power
• Energy
• Force

Which example shows an unbalanced force? 

• A pencil sitting on a desk
• a car parked in a parking lot
• a coat laying on the floor
• a child sliding down a slide

Tags

NGSS.MS-PS2-2

Which of these is an example of a balanced force? 

• A book sitting on a chair
• a ball rolling down the road
• a fish swimming in its bowl
• a plate sitting in the sink

Tags

NGSS.3-PS2-1

In which of these cases is work being done? 

• A student sleeps
• A student pushes a locked door that does not move
• a student carries his chair into another room
• A student sits on the carpet

Tags

NGSS.MS-PS3-5

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

A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?

• lever, wheel and axle, pulley
• wheel and axle, inclined plane, pulley
• wheel and axle, pulley, inclined plane

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