Work

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

• power
• work
• momentum
• Watt

 Work done = Force x _________

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

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

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

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

This is work divided by time.

• Work
• Distance
• Power

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 mechanical advantage?

• The advantage a machine has over a bicycle

• A measure of how much a simple machine reduces work

• A measure of when is the best time to use a simple machine

• A measure of the input force is multiplied using a simple machine

Tags

NGSS.MS-PS2-2

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

To increase the mechanical advantage of a lever

• make sure the fulcrum is in the middle of the lever
• move the fulcrum closer to the load
• move the fulcrum closer to the effort
• use a bigger fulcrum

Tags

NGSS.MS-PS2-2

A simple machine usually used to raise a flag is a

• inclined plane
• pulley
• lever
• wheel and axle

Tags

NGSS.MS-PS2-1