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Sean77771
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Homework Statement
A car traveling at 20 m/s stops in a distance of 50m. Assume that the acceleration is constant. The coefficients of friction between a passenger and the seat are u_s = 0.5 and u_k = 0.3. Will a 70 kg passenger slide off the seat if not wearing a seat belt? Prove it.
Homework Equations
f_s(max) = u_s*N
x_f = x_i + v_i*t + 1/2 at^2
The Attempt at a Solution
I used the first equations to find that f_s(max) is equal to 343N and the second to find that the acceleration is -4m/s^2. I don't know where to go from here. Please, I need this for class tomorrow morning! Thanks.
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