convert 180km/h into m/s 2.a train travelling at a speed of 60km/h is stopped in 15 seconds by applying the brakes. determine the retardation.
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1) 180 kmph = 180×5/18 m/s = 50 m/s
2) u=60m/s = 300/18 m/s
v= 0
t= 15 s
a = v-u /t
= -300/18*1/15
= -20/18 m/s²
= 1.1 m /s²
2) u=60m/s = 300/18 m/s
v= 0
t= 15 s
a = v-u /t
= -300/18*1/15
= -20/18 m/s²
= 1.1 m /s²
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