Energy and Power

If a group of workers can apply a force of 1,000 Newtons to move a crate 20 meters, what amount of work will they have accomplished?

• 20,000 J

• 200 J

• 2,000 J

• 20 J

If 68 W of power is produced in 18 seconds, how much work is done?

• 1,224 J

• 0.264 J

• 3.77 J

• 12.24 J

Tags

NGSS.HS-PS3-1

How much work is produced when 350 N is used to move a car 5 m?

• 70 J

• 1750 J

• 355 J

• 175 J

What is the definition for kinetic energy?

• the energy of motion (due to mass and velocity)

• stored energy due to position

• Energy at the top of a hill

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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

• power

• work

• momentum

• 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

Tags

NGSS.HS-PS2-1

What is the equation for work?

• W = mass x acceleration

• W = force x distance

• W = force / distance

• W = speed / time

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Kinetic energy is associated with ---.

• speed

• position

• direction

• temperature

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Energy of a rock perched on a cliff is an example of...

• gravitational

• elastic

• chemical

• kinetic

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Energy from a compressed spring would be an example of...

• kinetic

• elastic

• gravitational

• chemical