Power and Energy Problems

What is work?

• the use of force
• exert a force 
• force applied to move an object 
• moving an object

Tags

NGSS.HS-PS3-3

How is work calculated?

• force/distance
• energy x distance
• force x distance
• energy/time

What is the unit of measurement for work?

• Newton
• Watt
• Meter
• Joule

Tags

NGSS.HS-PS2-1

How much work is done if a boy pulls a sled 2 m with a force of 20 N? 

• 10 J
• 40 J
• 22 J
• 12 J

What is power?

• rate of force applied
• time/energy
• the strength of an object
• rate at which work is done

How is power calculated?

• time x energy
• energy x distance
• energy/time
• force/time

What is the unit of measure for power?

• Watt
• Joule
• Meters
• Newtons

What is the unit of measure for energy?

• Meters
• Newton
• Watt
• Joule

If you push very hard on an object but it does not move, has work been done?

• Yes
• No

What is the kinetic energy of a 9.2kg book that has a speed of 5.5m/s?

• .5J
• 9.2J
• 25J
• 139.2J