Work and Simple Machines Part 1

In order for Work to happen, what 2 things must occur?

• Mass and Displacement
• Force and Mass
• Force and Work
• Force and displacement

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane

What is work?

• A push or pull.
• When the object moves in the same direction in which the force is exerted.
• A change in energy.
• The rate at which energy is transferred.

Tags

NGSS.MS-PS3-5

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

Which is doing work?

• pushing a wall
• holding a box
• picking up a pencil
• sitting in a chair

Which of the following is the best example of work being done? 

• doing homework
• lifting a box
• pushing a stationary box
• holding a box

An example of work is holding a heavy bag.

• True
• false

Work is a measurement of how much force is applied over a certain

• distance
• velocity
• shape
• size

Tags

NGSS.HS-PS3-3