# Newt's 2nd Law-Non-Equilibrium

1. Dec 2, 2008

### Vaalron

Newt's 2nd Law--Non-Equilibrium

1. The problem statement, all variables and given/known data
A student is skateboarding down a ramp that is 6.0m long and inclined at 18 degrees with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 2.6 m/s. Neglect friction and find the speed at the bottom of the ramp.

$$\Delta$$X = 6 meters
$$\theta$$= 18 degrees
v$$_{}o$$= 2.6 m/s
v$$_{}f$$= ?

2. Relevant equations
v$$_{}f$$2= v$$_{}o$$2 + 2ax

3. The attempt at a solution
v(f)2= 6.76+ 12a

I have no idea what I'm doing. Could I get a push in the right direction? Thanks.

2. Dec 2, 2008

### fluidistic

Re: Newt's 2nd Law--Non-Equilibrium

For this problem I'd use the conservation of energy law. You just have to find the height of the ramp and you can write down the equation.