Work vs Power

Use one of these equations to answer this question (W = Fd) and (P = W/t): When Aang fights Ozai, he wields 100,000 Joules in 25 seconds. What is his power?

• 4,000 J/s (Watts)

• 250,000 J/s (Watts)

• 125,000,000 Newtons

• 2,000,000 Joules

Which of these are measurements of power?

• 100 joules

• 100 watts

• 100 joules/second

• 100 hertz

A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?

• 77 joules

• 70 joules

• 7.7 joules

• 11 joules

Tags

NGSS.MS-PS2-2

Which of the following is a unit of power?

• Joule

• Watt

• Newton

• Pascal

Tags

DOK Level 1: Recall

If a force of 15 N is applied to move an object 3 meters, how much work is done?

• 45 J

• 5 J

• 30 J

• 50 J

Tags

DOK Level 2: Skill/Concept

Power is measured in which units?

• Newtons

• Joules

• Watts

• Joule/sec

What is the equation for calculating power?

• distance / time

• work x time

• work / time

• force x distance

A 500N block is lifted 10 m. How much work was done?

• 5000 J

• 500 J

• 50 J

• 5 J

Tags

NGSS.MS-PS3-4

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

• power

• work

• momentum

• Watt

Which of the following is a measurement of power?

• 100 joules

• 100 watts

• 100 joules/second

• 100 hertz