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# Inertia

## The tendency of an object to resist a change in its motion.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Real World Application

## Football Physics

by CK-12 //basic

Learn about Newton's first law of motion and how it applies to football.

15
• Real World Application

## Field Goal Physics

by CK-12 //basic

Discover how Newton's second law of motion and the concept of inertia apply to kicking a field goal in football.

6
• Real World Application

## Mystery in Death Valley

by CK-12 //basic

Learn about mysterious sliding rocks in Death Valley and possible explanations for the mystery.

21
• Real World Application

## Tug of War

by CK-12 //basic

Learn what forces are involved in the game of tug of war and how the game illustrates Newton's first law of motion.

1