Question

If a train going 60 m/s hits the brakes, and it takes the train 1 minute 25 seconds to stop, what is the
train’s acceleration?​

Answer 1

Answer:

0.705

Explanation:

$speed \: of \: train = 60ms \\ time = 1 \: min \: 25 \: sec = 60 \ + 25 = 85sec \\ acceeleration = speed \div time \\ = 60 \div 85 \\ = 0.705$

Answer 2

Answer:

-0.70m/s^2

Explanation:

initial velocity = 60 m/s

final velocity = 0

time = 85 second

v=u +at

-60/85 = -0.70m/s^2