acceleration and movement

timer Asked: Sep 11th, 2014
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Question Description

A driver with 0.80s reaction time applies the breaks causing car to have 7.0 m/s^2 acceleration opposite direction of motion. if car is initially at 21 m/s how far does car travel during reaction time? how far does car travel while skidding to stop?

Tutor Answer

Adesh K
School: University of Maryland


u=21 m/s


Distance travelled before brakes are applied=u*reaction time=21*0.8=16.8m

Distance covered after application of brake be s.




Total distance=31.5+16.8=48.3m

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