Unit 3 – Work, Energy, and Power

/ Unit 3 – Work, Energy, and Power

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You’ll learn the definitions of and relationships between work, energy, and power.

Question Difficulty:

Question	Difficulty	Students Solved
Mechanical Energy in Projectile Motion	medium	35
Work Done by Gravitational Force	medium	30
Work Done By Gravitational Force	medium	35
Elastic Potential to Kinetic Energy	medium	27
Work and Changes in Kinetic Energy	easy	18
Factors of Gravitational Potential Energy	easy	29
Force Components and Work	medium	28
Instantaneous Power and Force Angle	medium	20
Work and Potential Energy in a Conservative Field	easy	19
Work Done by a Conservative Force	easy	18
Elastic Potential Energy in a Spring	easy	18
Average Power Formula	easy	20
Kinetic Energy and Speed Relationship	easy	16
Potential Energy of Springs in Series	medium	9
Condition For Zero Work	easy	12
Energy Dissipation in a Pendulum	medium	13
Energy Conservation in Inelastic Collisions	easy	8
Work Done by a Variable Force	medium	10
Elastic Potential Energy in a Spring	easy	11
Average Power Dissipation	hard	14

Items per page:

1 – 20 of 521

Rank	User	Correct Count	Attempt Count	Time	Score
#1	dxie26808	286	383	1h 39m	21,682
#2	dpaak0903	96	102	0m 10s	9,530
#3	jchenlisg	68	124	0m 00s	6,240
#4	shakthi.durai11	45	59	0m 00s	4,360
#5	ndele646	43	54	0m 00s	4,190
#6	chuckp.0920	36	68	0m 00s	3,280
#7	nmtnice2010	23	25	0m 00s	2,280
#8	kievezhao	22	28	0m 00s	2,140
#9	foevito.rw	19	20	0m 00s	1,890
#10	dhithyaram	14	14	0m 00s	1,400

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1 – 10 of 93