Work, Power and Simple Machines

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

• power
• work
• momentum
• Watt

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

Which of the following is the best example of work being done. 

• doing homework
• lifting a box
• pushing a stationary box
• holding a box

What is the definition of power?

• the amount of work an object does
• the rate at which force is applied
• the amount of matter in an object
• the rate at which work is done

What is an advantage of using a simple machine?

• less work in more time

• less work in less time

• more work less time

• same work less time

Tags

NGSS.MS-ETS1-1

A simple machine usually used to raise a flag is a

• inclined plane
• pulley
• lever
• wheel and axle

Tags

NGSS.MS-ETS1-2

A ramp is an example of a(n)

• inclined plane
• fulcrum
• force
• lever

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

An inclined plane wrapped around a rod forms this simple machine 

• lever
• pulley
• screw
• wedge 

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

• lever
• inclined plane
• pulley
• screw

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

Tags

NGSS.HS-PS3-3