Work, Energy and Power

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

How do you calculate power?

• P = W/t

• P = E/t

• P = w * t

• P = bbq/chicken

What is the energy of position or shape that depends on weight and height, also called stored energy?

• Energy

• Kinetic energy

• Potential energy

• Sound energy

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

What is being transferred as you do work?

• Energy

• Heat

• Power

• Gravitational Potential Energy

Tags

NGSS.MS-PS3-5

What are the units for the power formula:

power=work/time

• W=s/J

• J=W/s

• J=s/W

• W=J/s

How much work is being done with 200 N of force over 426 meters?

• 85,200 J

• 45,620 J

• 90,480 J

• 62,329 J

Tags

NGSS.MS-PS3-5

What is power?

• transfer a force through a distance

• the rate of speed 

• the rate of work being done

• transfer of space over time

Tags

NGSS.MS-PS3-5

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

• Power

• Joules

• Work

• Newton

• No choice is correct

Work is measured in which unit?

• Kilogram

• Joule

• Newton

• Watt

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