Chapter 4 Multiple Choice Quiz 1

Please answer all questions


1	According to the scientific definition of work, pushing on a rock accomplishes no work unless there is
		A)	an applied force greater than its weight.
		B)	a net force greater than zero.
		C)	an opposing force.
		D)	movement in same direction as the force.


2	The metric unit of a joule (J) is a unit of
		A)	potential energy
		B)	work
		C)	kinetic energy
		D)	all of the above


3	Power is
		A)	the rate at which energy is expended.
		B)	work per unit of time.
		C)	the rate at which work is done.
		D)	any of the above.


4	A Nm/s is a unit of
		A)	energy.
		B)	power.
		C)	force.
		D)	work.


5	The kilowatt-hour is a unit of
		A)	power.
		B)	work.
		C)	time.
		D)	force.


6	The potential energy of box on a shelf, relative to the floor, is a measure of
		A)	the work done putting the box on the shelf from the floor.
		B)	the weight of the box times the distance above the floor.
		C)	the energy the box has because of its position above the floor.
		D)	any of these.


7	Which quantity has the greatest influence on the amount of kinetic energy that a large truck has while moving down the highway?
		A)	mass.
		B)	weight.
		C)	velocity.
		D)	size.


8	Most all energy comes to and leaves the earth in the form of
		A)	nuclear energy.
		B)	chemical energy
		C)	radiant energy.
		D)	kinetic energy.


9	The law of conservation of energy is a statement that
		A)	energy must be conserved and you a breaking a law if you waste energy.
		B)	the supply of energy is limited so we must conserve.
		C)	the total amount of energy is constant.
		D)	energy cannot be used faster than it is created.


10	Energy is
		A)	the ability to do work.
		B)	the worked needed to create potential or kinetic energy.
		C)	the work that can be done by an object with PE or KE.
		D)	all of the above.

2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.