How many seconds will a 5 0 0 metre long train take to cross a man walking at a speed of 3 - - - - - in the direction of the moving train if the speed of the train is 6 3 - - - - - -

The correct option is E 30 Speed of train relative to make to man = (63 3) kmph = 60 kmph = ( 60 ×5/18)m/s = 50/3m/s ∴ Time taken to pass the man = ( 500 ×3/ ...

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How many seconds will a 500 metre long train take to cross a man walking at a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

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Solution

The correct option is B
30

Speed of train relative to make to man = (63 - 3) kmph = 60 kmph = $(60 \times \frac{5}{18})$ m/s = $\frac{50}{3}$ m/s

$∴$ Time taken to pass the man = $(500 \times \frac{3}{50})$ sec = 30 sec

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How many seconds will a 500 metre long train take to cross a man walking at a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

The correct option is B 30 Speed of train relative to make to man = (63 - 3) kmph = 60 kmph = (60×518)m/s = 503m/s ∴ Time taken to pass the man = (500×350)sec = 30 sec

The correct option is B
30

Speed of train relative to make to man = (63 - 3) kmph = 60 kmph = $(60 \times \frac{5}{18})$ m/s = $\frac{50}{3}$ m/s

$∴$ Time taken to pass the man = $(500 \times \frac{3}{50})$ sec = 30 sec