Tuesday, May 28, 2013

My kids and their love of Rayman, the videogame

My two kids dig the videogame, Rayman. They wrote letters to him asking him over for a playdate.

If you made these, you had a great childhood

Jace made this bow and arrow today. Set up a little target on the porch, as well. Another proud fatherly moment. 

Saturday, May 18, 2013

Newton's First Law of Motion...Quick Demo

Newton's First Law of Motion states that: "An object in motion stays in motion and an object at rest stays at rest unless acted upon by an unbalanced force."

That ball bearing in the video wants to remain in place (it has what is called "inertia") but only if you can overcome the force of friction between the ball and the playing card.

If you move the card slowly, you don't overcome the force of friction and the ball moves with the card.

The same thing happens when you pull a sheet of paper out from under a book. Or even a tablecloth from under a place setting... Don't try that at home!

Have any other demonstrations that apply to this principle?