Two trains 132 meters and 108 meters long aee running in apposite direction one at the rate of 32 kmph another one at rate of 40kmph from the moment they meet will cross each other in
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HI BUDDY,
■ CONVERTING 32 kmph AND 40 kmph IN meter/sec.
32 × 5/18 = 8.8 m/s
40 × 5/18 = 11.1 m/s
■ GIVEN AND CALCULATED
SPEED OF 1ST TRAIN, Ts1 = 8.8 m/s
SPEED OF 2ND TRAIN, Ts2 = 11.1 m/s
LENGHT OF 1ST TRAIN, Tl1 = 132 m
LENGHT OF 2ND TRAIN, Tl2 = 108m
■ TOTAL LENGHT
Tl1 + Tl2 = 132 + 108 = 240 m.
■ TOTAL SPEED OR VELOCITY
Ts1 + Ts2 = 8.8 + 11.1 = 19.9 m/s i.e. 20 m/s
■ TIME TAKEN TO CROSS
TIME TAKEN TO CROSS EACH OTHER = TOTAL DIATANCE/TOTAL SPEED = 240/20 = 12 sec.
●TIME TAKEN BY BOTH THE TRAINS TO TO CROSS EACH OTHER IS 12 SECONDS
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■ CONVERTING 32 kmph AND 40 kmph IN meter/sec.
32 × 5/18 = 8.8 m/s
40 × 5/18 = 11.1 m/s
■ GIVEN AND CALCULATED
SPEED OF 1ST TRAIN, Ts1 = 8.8 m/s
SPEED OF 2ND TRAIN, Ts2 = 11.1 m/s
LENGHT OF 1ST TRAIN, Tl1 = 132 m
LENGHT OF 2ND TRAIN, Tl2 = 108m
■ TOTAL LENGHT
Tl1 + Tl2 = 132 + 108 = 240 m.
■ TOTAL SPEED OR VELOCITY
Ts1 + Ts2 = 8.8 + 11.1 = 19.9 m/s i.e. 20 m/s
■ TIME TAKEN TO CROSS
TIME TAKEN TO CROSS EACH OTHER = TOTAL DIATANCE/TOTAL SPEED = 240/20 = 12 sec.
●TIME TAKEN BY BOTH THE TRAINS TO TO CROSS EACH OTHER IS 12 SECONDS
Hoping it will be helpful
Surely comment for further questions if any
Sure subscribe my YOUTUBE channel - Himanshu Agarkar
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