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## Homework Statement

A skateboarder starts up a 1.0 m high 30 degree ramp at a speed of 7.0 m/s. The skateboard wheels roll without friction. How far from the end of the ramp does the skateboarder touch down?

## The Attempt at a Solution

ramp length=

h=1sin30=1/2

length=2m

v^2=vi^2+2ad

v^2=7^2+2(-9.8)(2)

vf=3.13m/s

vf=vi+a(Dt)

0=3.13+-9.8(t)

delta t=.32s

Xf=xi+vi(dT)

x=0+3.13(.32)

xf=1.0016

yf=yi+vi(dt)+1/2a*(dt)^2

yf=1+0(.32)+1/2(-9.8)(.32)^2

yf=0

The skateboarder lands 1.0016 meters from the end of the ramp.

I know I'm missing something somewhere... can someone please help me find it.