Question

2.
A train moving with a speed of 60 km/hr is slowed down uniformly to 30 km/hr for repair purposes
during running. After this it was accelerated uniformly to reach to its original speed. If the distance
covered during constant retardation be 2 km and that covered during constant acceleration be 1 km.
find the time lost in the above journey :-
(A) 1 min
(B)2 min
(C)4 min
(D) 5 min
​

Answer 1

It will take 4 min because

if it cover 30km/hr then in 1 min it

will cover half a km

because 30

60

= 1

2

so to cover 2km it will take 4 min

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Answer 2

Answer:

Hope this helps!