A Moment of Science
Today's Moment of Science is about the ollie, the jump skateboarders use to jump over curbs, onto benches, or across chasms.
After a session on a treadmill you might have noticed that when you get off the machine you feel like you are walking much faster than you really are.
A skydiver's body is in a delicate balance. Gravity tugs her downward with a constant, relentless force, while air resistance pushes her upward.
Every skydiver experiences two different forces: the tug of gravity and the upward push of air resistance.
Have you ever sprayed someone with a garden hose? If you wanted to get them good, you placed your finger over part of the tip of the hose. The water then sprayed out faster and farther. Why does putting your finger over the tip of the hose make the water shoot out faster and farther? Learn more on this Moment of Science.
As your car rapidly decelerates, you feel yourself pushed up against the wheel. Why? Learn more on this Moment of Science.
Though they make it look easy, skateboarders spend a tremendous amount of time practicing when it comes to perfecting the ollie.
Copyright © 2013, The Trustees of Indiana University | Copyright Complaints
1229 East Seventh Street, Bloomington, Indiana 47405
