Kilometers 80360

A subway train covers a distance of 1.4 km between two adjacent stations in 1 minute 40 seconds. What is her average speed? Give the result in kilometers per hour and meters per second.

Correct answer:

v1 =  50.4 km/h
v2 =  14 m/s

Step-by-step explanation:

s=1.4 km t=0:1:40=0 hr 1 min 40 sec=0+601+360040=0.0169 hr0.0278  v1=s/t=1.4/0.0278=50.4 km/h
v2=v1 m/s=v1:3.6  m/s=50.4:3.6  m/s=14 m/s=14 m/s

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