Work, Power, & Simple Machines

What is the unit of measurement for work?

• Newtons
• Joules 
• Watts
• Meters

What is the equation for work?

• W = mass x acceleration

• W = force x distance

• W = force/distance

• W = speed/time

Which of the following IS NOT an example of work being done?

• Pushing a cart in a store
• Shooting a basketball
• A stand off in tug of war
• Running a mile

Tags

NGSS.HS-PS3-2

If a student uses 10 Newtons of Force to push a chair 5 meters, how much is work is being done?

• 2 Joules
• .5 Joules
• 50 Joules
• 20 Newtons

If a boulder is lifted by a forklift a distance of 10 meters with a force of 30 Newtons. How much work is being done?

• .333 Joules
• 3 Joules
• 300 Joules
• 60 Joules

Unit of Power

• joule
• watt
• meter
• newton

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

• 70 J
• 1750 J
• 355 J
• 175 J

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

What is the unit for force?

• N/kg

• Nm

• N

• J

Tags

NGSS.HS-PS2-1

A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?

• 50J

• 50W

• 500J

• 500W