What Is Work

Happens when you exert a force on the object that causes the object to move some distance

• Energy

• Power

• Work

• Force

If there are force and motion, there is work if and only if

• The direction of the force is different from the direction of the motion.

• The direction of the force is the same as the direction of the motion.

A boy lifts a heavy package.

• Work

• No Work

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

A man pushing a grocery cart.

• Work

• No Work

A boy pulling a sled.

• Work

• No Work

Formula for Work

• Work = Force times Distance

• Work = Force divided by Distance

• Work = Distance divided by Force

Tommy does 45 Joules of work to push the pencil over 3 meters. How much force did he use?

• 15 N

• 15 J

• 135 N

• 135 J

What is the scientific definition of work?

• A force applied over a distance

• Energy stored in an object

• The rate of doing work

• The potential energy of an object

Tags

NGSS.HS-PS2-1

Which of the following scenarios involves work being done?

• Holding a book stationary

• Pushing a car up a hill

• Standing still

• Sitting on a chair

What is the unit of work in the International System of Units (SI)?

• Newton

• Joule

• Watt

• Pascal