What is Physics

Physics according to physics.org is "the study of matter energy and the interaction between them" 

With this in mind and from what we have study so far, please post a question about physics. 

You question should be thoughtful, in a complete sentence, and original. 

conservation of momentum

Suppose two spheres approach each other at 1 m/s from opposite directions. Their total momentum is zero. After the collision, they both zoom off at 1m/s in opposite directions. 

What is their momentum? 
What do you know about the mass of the two spheres? 

Transferring Momentum

When a player uses a golf club to hit a ball how is the momentum transferred? 

Can you stop this ?

What do you get when you multiply mass times velocity? 

speed or velocity

What is the difference between speed and velocity 

Is it distance or displacement

What is the difference between distance and displacement? Explain. 

Focus on Physics

Lets focus today on the contributions of  famous physicist. Pick one and post what their contribution was to science.