d) 2 trains A and B start from 2 stations 250 km apart from each other with an initial
velocity of 72 km/h and 90 km/h respectively. After 1.5 hours, due to some
inconvenience, both the trains start running on the same track towards each other. A
farmer passing by notices this and stands on the track and waves his red shirt. Both
trains decelerate uniformly by 0.5 m/s and finally stop, and a mishap is averted.
i) What is the distance between the trains after 1.5 hours?
ii) How much time do the trains take to stop after applying brakes?
Answers
Answered by
5
Explanation:
Given Train starts at the same time.
Hence, Time remains constant.
Speed of Train 'T1' be 'S1' = 40 km\hr
Speed of Train 'T2' be 'S2' = 45 km\hr
Let X be the distance at which trains meet.
Train T2 travels X+40 km more than Train T1
According to the formula.
Speed=
Time
Distance
Time=
45
X+40
Time=
40
X
From above two equations.
40
X
=
45
X+40
45×X=40×X+40×40
5×X=1600
=320 km
Distance between two Stations = Distance at which train T1 meet + Distance at which Train T2 meet + Distance train T2 travels
= 320+320+40
= 680
Answered by
0
Explanation:
a)7km
b)50sec
hope it helps you?
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