This is a quick puzzle, best done as a physical presentation, to compare the momentum of two very dissimilar balls after they...

Classroom Activity 14-16

Things that are already moving require a force acting on them for a certain duration. You can't change the momentum without...

Classroom Activity 14-16

The model used to add or take away momentum explicitly accumulates the force over time and so allows you to see that it is...

Classroom Activity 14-16

Throw a tennis ball harder and it leaves your hand faster. No surprise there–we're just describing an everyday occurrence in...

Physics Narrative 14-16