Determine the stopping distances for an automobile going a constant initial speed of 97km/h and human reaction time of 0.50s , for an acceleration a=−6.5m/s2

4 answers

***Convert initial speed to m/s

a=-6.5m/s^2
Vf=0
d=?
***Vi=97km/h*(10^3m/1km)*(1h/3600s)=27m/s

Use the following equation and solve for d:

Vf^2=Vi^2+2ad

0^2=(27m/s)^2+2(-6.5m/s^2)d

729=13d

Solving for d,

729/13=d

d=56m

correct.

wrong

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