Work, Power and Simple Machine Grade 8th

Work is can moves object if there's a force applied and....

• Gravity

• Mass

• Displacement

• Power

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The measured of work is...

• Joule

• Newton

• Meter

• Watt

Tags

NGSS.MS-PS3-5

The time rate of doing work is called...

• Force

• Power

• Motion

• Displacement

A device can make work easier is called...

• Force

• Power

• Motion

• Machine

There are types of simple machine, except...

• Lever

• Pulley

• Train way

• Inclined plane

See a picture. There are example of simple machine...

• Lever 1st class

• Lever 2nd class

• Lever 3rd class

• Lever 4th class

Tags

NGSS.3-5-ETS1-1

Calculate force a horse do if it used work 1400 joule over 70 meter ?

• 20 N

• 200 N

• 28 N

• 280 N

Santi want to turn on the lamp power 150 watt in 30 second. Calculate the work of the lamp?

• 1500 J

• 4500 J

• 6500 J

• 5000 J

Tags

NGSS.HS-PS3-1

Calculate Fi from this picture?

• 270 N

• 27 N

• 300 N

• 30 N

Tags

NGSS.MS-PS2-2

What is the result of Fi from this picture?

• 180 N

• 18 N

• 90 N

• 60 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2