Watch this narrated screencast which explains the physics of collisions when applying Newton's second law of motion. [4:12]

A screencast which provides an explanation of impulse force as it relates to Newton's laws of motion. [4:12]

Explore Newton's first and second laws of motion, including some examples of inertial reference frames. [5:23]

Practice some problems using Newton's second law of motion, when accounting for the force of air resistance. [5:58]

Explore conservation of momentum with some example problems and equations. [9:07]

A narrated tutorial which explains Newton's second law of motion when air resistance is taken into account. [6:43]

This lesson will introduce the second law of thermodynamics and define the term entropy, providing examples of entropy.