Question

A train travels at a speed of 60km/h for 0.52 h, at 30km/h for the 0.24h

Answer 1

for 60 kmph = 60×0.52 h = 31.2 m

for 30 kmph = 30 x 0.24 = 7.2 km

Vav = D1 +D2 / t1 + t2 = 31.2+7.2/ 0.52+0.24 km/hr