- #1
aksarb
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Homework Statement
A skier is going 8.2m/s when she falls and starts sliding down the ski run. After 3.0s, her velocity has changed to 3.1m/s. How many seconds after she originally fell did she finally come to a stop? (Assume constant acceleration)
Homework Equations
Δd = 1(v1+v2)Δt
2
2aΔd = v2^2 - v1^2
Δd = v1 Δt + 1/2 a (Δt)2
Δd = v2 Δt - 1/2 a (Δt)2
The Attempt at a Solution
Since the question gave me 3 pieces of information, I just tired to sub it into the equations no problem. I realized afterwards that I was only going to find displacement, not the time. But, I already have time, so I have no clue how to get this question. Please help me.