Work and Simple Machines Review

What is the scientific definition of work?

• Thinking hard about something. 
• Using force to move an object. 
• Making money.
• Listening to music.

True or False: As a man pushes a refrigerator up a ramp, work is done.

• True
• False

True or False: A man would do more work if he pushes a box up a ramp faster.

• True
• False

A girl LIFTS a bag. 

• Work
• No Work

A boy HOLDS a book.

• Work
• No Work

A man SITS on a box

• Work
• No Work

A woman WAITS for her dog to urinate.

• Work
• No Work

A boy KICKS a soccer ball.

• Work
• No Work

A girl SWIMS.

• Work
• No Work

A student SPRINTS across the field. 

• Work
• No Work