Calculating Work and Power

Newtons are the correct unit for which of the following?

• Force

• Work

• Power

• Acceleration

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

In order to do work on an object, the force you exert must be...

• The maximum amount of force you are able to exert.
• In the same direction as the object's motion.
• In a direction opposite to Earth's gravitational force.
• quick and deliberate.

How do we calculate work?

• W = F * d

• w = F / d

Which is the correct unit for work?

• Joules

• Newton

• meter

• Watts

The rate at which work is done.

• Joules
• Power
• Watts
• Newtons

How do you calculate power?

• P = W/t
• P = E/t
• P = w * t
• P = bbq/chicken

What is the correct unit for power?

• Watt

• Joules

• Newtons

• seconds

It took 500 Newtons of force to push a car four meters. How much work was done?

• 2000 J

• 125 J

• 0.008 J

• 500 J

Tags

NGSS.MS-PS2-2

1. A book weighing 1.0 newton is lifted 2 meters.  How much work was done?

• 2 J
• 0.5 J

A force of 15 newtons is used to push a box along the floor a distance of 3 meters.  How much work was done?

• 3 J
• 45 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2