# Marble Roller Coaster Help

In my 11th grade physics class we had to design and make a marble roller coaster. Now we have to write a paper explaining how one aspect of our coaster works. I chose to do the jump, but I really have no idea how to explain how this works using physics. Can someone please help me? Also you can add me and talk to me on msn, Ameriland_06@hotmail.com

Someone please help me?? i really need help.... if you could just put me on the right track. I'm as lost as a snow goose in a blizzard..

Please someone.... My time is running out... i need help

BobG
Homework Helper
Compare the vertical components of the marble's velocity with the horizontal.

The marble is traveling a certain speed and the jump is probably angled upward by some angle. The marble's vertical velocity is it's speed times the sine of the angle of the jump. The horizontal velocity is the marble's speed times the cosine of the angle of the jump.

Look up the equation for motion in your physics book. The vertical component is affected by gravity. The horizontal component isn't.

Thanks for the help, your a really awesome guy for doing this....

umm.... i am having a problem with your with your explination of how a jump works in my marble roller coaster. "The marble is traveling at a certain speed and the jump is angled upward by some angle. The marble's vertical velocity is its speed times the sine of the angle of the jump. The horizontal velocity is the marble's speed times the cosine of the angle of the jump." How does the horizontal and vertical velocity explain why it jumps and works? would it be that the vertical velocity overcomes gravity and the horizontal allows it to continue going forward? Please and Thank you...

BobG