The MRT train

The MRT running from Taft to North Avenue has a starting velocity of 60km/hr. After a malfunction, the brakes failed, making the train run at a velocity of 80km/hr. What is the acceleration rate if the time for velocity change is 5 seconds?

Correct answer:

a =  1.1111 m/s2

Step-by-step explanation:

v1=60 km/h m/s=60:3.6  m/s=16.66667 m/s v2=80 km/h m/s=80:3.6  m/s=22.22222 m/s t=5 s  a=tv2v1=59200350=910 m/s2=1.1111 m/s2

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