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

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Which of these are measurements of power?

• 100 joules

• 100 watts

• 100 joules/second

• 100 hertz

The formula for power is

• work/time (P = W/t)

• force × distance (W = Fd)

• distance/time (s = d/t)

• mass × acceleration (F = ma)

Tags

NGSS.MS-PS3-5

The rate that work is done (time taken to do work) is known as _____.

• Power

• Energy

• Efficiency

• Heat

The derived unit "Watt" is used to measure what?

• Electric charge

• Power

• Magnetic field strength

• Electric resistance

Tags

NGSS.HS-PS2-5

The rate at which work is done

• power

• force

• velocity

• energy

Tags

NGSS.MS-PS3-5

What is the unit of power in electrical systems?

• Joule

• Watt

• Volt

• Ampere

The SI unit of power is the

(a)  

A motor does 1500 J of work in 3 seconds. What is the power of the motor?

• 500 W

• 4500 W

• 150 W

• 300 W

Tags

DOK Level 2: Skill/Concept

The unit used to measure power is the _______.

• watt

• newton

• joules

• horsepower

Tags

NGSS.MS-PS3-5