PS 14.1 Formative

The product of force and distance.

• work

• power

• force

• velocity

If there is no movement, no work is done on an object.

• true

• false

Only the force that acts in the direction of an object's motion does work on the object.

• true

• false

Tags

NGSS.HS-PS3-1

The SI unit of work.

• joule

• watt

• m/sec

• N/sec

The rate of doing work.

• power

• work

• speed

• velocity

The SI unit of power.

• watt

• joule

• Newton

• m/sec

Another common unit of power, equal to about 746 watts.

• joule

• horsepower

• cc

• Newton-meter

A weight lifter lifts a 600N weight over his head to a height of 2.0 m. How much work did he do while lifting the weight?

• 1200 watts

• 1200 joules

• 600 joules

• zero

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

You exert a vertical force of 38 Newtons to lift a box to a height of 1.5 meters in a time of 2 seconds. How much power is used to lift the box?

• 28.5 watts

• 57 joules

• zero

• 12.67 watts

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

To increase power, you can do a given amount of work in more time.

• true

• false