Question

two trains are traveling in opposite directions with speed 10 m s and 20 m s. Their drivers saw they on same track

Answer 1

Explanation:

the minimum distance must be the distance for both trains to come at rest

v2=u2+2a1s1

0+100−4s1

s1=25m 

for train 2 

0=400−2a2s2

s2=200m

therefore the minimum distance is 225 m