Tony Hawk is from San Diego, my hometown. He's very active there. There's a whole skate park at the Encinitas YMCA that he designed and donated.
-Tony Hawk uses balance and motion so he can ride on his skateboard.-Being "stable" is important because so that you wouldn't fall off and hurt yourself.-You are balanced, if you are not falling off. -Wheels at first, will go down the ramp. If you have force added, it will roll up back up.-Rolling is like wheels going in circles as they rotate on their axis.
Thanks Ricky! We are wondering if you have ever seen him skate in person.