physics

Determine the stopping distances for a car with an initial speed of 93 km/h and human reaction time of 3.0 s for the following accelerations.
(a) a = -4.0 m/s2
, but has changed from what was graded. m
(b) a = -8.0 m/s2
but has changed from what was graded. m

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asked by Adnane
  1. distance during reaction time: V*3 seconds

    distance during slowing= Vi^2/2a

    change Vi 93km/hr to m/s

    and add the distances.

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