Chapter 3 & 4 Forces, Work, and Energy

Each of the following is a force, except _______.

• air resistance

• friction

• acceleration

• gravity

The amount of gravitational force exerted on an object is its _______.

• acceleration

• mass

• velocity

• weight

During which segment on this graph is the car moving fastest?

• a

• b

• d

• e

Which segment represents the car slowing down?

• a

• b

• c

• e

A snow skier slowing to a stop after skiing down a mountain demonstrates the effects of __________ friction.

• air

• rolling

• sliding

• static

_______ is force applied through a distance.

• Effort

• Resistance

• Power

• Work

In which of the following situations do your arms do work on books?

• holding a heavy stack of books while standing

• carrying a heavy stack of books

• dropping a stack of books onto a table

• picking up a pile of books from the floor

Which of the following equations should be used to calculate work done?

• W = F × d

• W = F/d

• W = F × a

• W = m × d

You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?

• 54 J

• 6.0 J

• 21 J

• 27 J

A watt is equal to _______.

• one newton-meter

• one meter per second

• one newton per second

• one joule per second