Train 2

The train slowed down from 90 km/h to 72 km/h in 5 seconds. How long track travel?

Correct result:

s =  112.5 m

Solution:

t=5 s v1=90/3.6=25 m/s v2=72/3.6=20 m/s a=(v1v2)/t=(2520)/5=1 m/s2 s=v1 t12 a t2=25 512 1 52=2252=2252 m=112.5 m



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