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route surveying

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a driver traveling at 50 mph is 80 m from the wall ahead. if the driver applies the brakes immediately and begins slowing the vehicle at 10 m/s squared, find the distance from the stopping point to the wall.

  • route surveying -

    1 mph = 5280*.3048/3600=0.44704 m/s

    vi=50*.44704=22.352 m/s
    vf=0
    a=-10 m/s²
    use kinematics equation
    vf²=vi²+2aΔx
    to solve for Δx.

    Subtract Δx from 80m to get the distance from the wall.

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