Work and power

Force is measured in which unit?

• Watt

• Kilogram

• Joule

• Newton

Power is measured in which unit?

• Newton

• Joule

• Pound

• Watt

Work is measured in which unit?

• Kilogram

• Joule

• Newton

• Watt

What formula is used to calculate work?

• W=F/d

• W=Fd

• W=F + d

• W=F-d

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What formula is used to calculate power?

• P=Ft

• P=F/t

• P=Wt

• P=W/t

Work can not be done in the absence of ______________.

• time

• electricity

• motion

• heat

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

As distance increases, work ______________

• increases

• decreases

• remains constant

• is not affected

As distance decreases, work _________________

• is not affected

• increases

• decreases

• remains constant

A 45N girl sits on a bench 0.6 meters off the ground. How much work is done on the bench?

• 75 J

• 27 J

• 44.4 J

• not enough information is given to solve the problem

A boy lifts a 30N toy car 2 meters above the ground. How much work did the boy do on the car?

• 60 J

• 15 J

• 28 J

• 32 J

Tags

NGSS.MS-PS3-5