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## Homework Statement

A 68 kg in-line skater starts from rest and accelerates at 0.21 m/s square for 15s.

a) Find her final velocty and total kinetic energy after the 15s of travel.

b) If she exerts a breaking frictional force of 280N, find her stopping distance.

## Homework Equations

Ek=1/2mv square

Eg=mg triangle (height)- triangle=multiply

Wnc=Efinal-Einital

## The Attempt at a Solution

I got most of the equation i knw. I need help solving it with a step by step solution.

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