Work, Power and Energy

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box ?

• 200 J

• 20.0J

• 2 J

• 200 N

Tags

NGSS.MS-PS3-5

How do you calculate power?

• P = W/t

• P = E/t

• P = w * t

• P = bbq/chicken

What is being transferred as you do work?

• Energy

• Heat

• Power

• Gravitational Potential Energy

Tags

NGSS.MS-PS3-5

Two factors that determine work are

• amount of the force, and effort used

• amount of the force, and type of force

• mass, and distance

• amount of force and distance moved

The rate (how fast) at which work is being done.

• Power

• Joules

• Work

• Newton

• No choice is correct

The units for power.

• Watts

• Power

• Joules

• Work

• No choice is correct

What are the units for the power formula:

power=work/time

• W=s/J

• J=W/s

• J=s/W

• W=J/s

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N

• 15 N

• 1.5 N

• 150 N

The unit or label for work is

• netwons

• joules

• meters

• seconds

Tags

NGSS.MS-PS3-5

 Work done = Force x blank?

• a. distance

• b. acceleration

• c. velocity

• d. speed