Mastering Physics: Solving a Rollercoaster Free Fall Problem with No Friction

[sillybilly]

Homework Statement

a 1 ton rollercoaster falls froma top of 100m ramp. how high above the ground is it when it is traveling at 20m/s. assume no friction

I DONT NO HOW TO START OR WHERE TO START FROM! PLZ HELP

 

[Cyosis]

Use conversation of energy. I am quite sure it is covered in your book.

 

[sillybilly]

ohh yes THANK YOU! :)