Pre-Assessment: Energy, Force, Motion and Work

"An energy transfer that occurs when a force exerted on an object moves the object over a distance in the same direction as the force" is the definition for -

• Work

• Friction

• Force

• Motion

In which situations is work done?

Check ALL correct answers.

• A man pushes a car, but it won't budge

• A college student pushes a grocery cart through the store

• A librarian picks up a book on the floor, and places it on a shelf

• A child leans against a tree to rest while playing tag

• A parent pulls their child in a wagon down the street

In which situations is NO work done?

Check ALL correct answers.

• A man pushes a car, but it won't budge

• A college student pushes a grocery cart through the store

• A librarian picks up a book on the floor, and places it on a shelf

• A child leans against a tree to rest while playing tag

• A parent pulls their child in a wagon down the street

To calculate work, you use this equation:

• Work = Force x Distance

• Work = Energy/Time

• Work = Distance/Force

• Work = Time x Energy

Energy is best defined as -

• the ability to do work or cause change

• a push or a pull

• an object’s position changes relative to another object

• a force that opposes motion

In which situation(s) is work done?

Check ALL correct answers.

• 1

• 2

• 3

• 4

In which situation(s) is NO work done?

Check ALL correct answers.

• 1

• 2

• 3

• 4

True or False?

Force, motion and work all require energy.

• True

• False

What is the unit for work?

• Joule (J)

• Newton (N)

• Watt (W)

• Meters (m)

Which of the following are types of energy?

Check ALL correct answers!

• Mechanical

• Potential

• Nuclear

• Chemical

• Electrical