Train Average Speed (Jee Mains) | ExamDuo
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Velocity, Speed & Acceleration
Medium
Train Average Speed
A train starting from rest first accelerates uniformly up to a speed of
80
km
∕
h
for time
t
, then it moves with a constant speed for time 3t. The average speed of the train for this duration of journey will be (in
km
∕
h
) :
SELECT ONE OPTION
A
80
B
70
C
30
D
40
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