simple

how quickly work is done

• force
• work
• power
• input force
• output force

Tags

NGSS.HS-PS2-1

This is done when a force causes an object to move in the same direction that the force is applied.

• force
• work
• power
• input force
• output force

the force the machine applies

• force
• work
• power
• input force
• output force

the force you apply on a machine

• force
• work
• power
• input force
• output force

a push or pull

• force
• work
• power
• input force
• output force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which yard tool has a wheel and axle that helps move a pile of dirt?

• 
• 
• 
• 

Which statement best describes work being done on an object?

• Two equal, but opposite, forces are applied to an object.

• A force is applied to an object and the object remains stationary.

• The frictional force on an object is greater than a pushing force applied to the object.

• A force is applied to an object, and the object moves in the same direction as the force.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A wheelbarrow is a compound machine. Which simple machines are used to form this compound machine?

• lever, pulley

• lever, wheel and axle

• inclined plane, wedge

• wedge, wheel and axle

Which best describes a lever?

• a simple machine that consists of an inclined plane wrapped around a cylinder

• a simple machine consisting of a sloping surface connecting higher and lower elevations

• a simple machine that consists of a bar that rotates around a fixed point called a fulcrum

• a simple machine that consists of two connected rings or cylinders, which turn in the same direction around a single center point

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Scissors are considered a compound machine. Which simple machines combine to create scissors?

• wedge and pulley

• wedge and lever

• lever and wheel

• axle and wedge

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2