Train 2

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

Correct answer:

s =  112.5 m

Step-by-step explanation:

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 t21 a t2=25 521 1 52=2225 m=112.5 m

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