Two locomotives approach each other on parallel tracks. Each has a speed of v = 80 km/h with respect to the ground. If they are initially d = 9.0 km apart, how long will it be before they reach each other?

asked Aug 26, 2021 221k views

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6 votes

Answer:

Step-by-step explanation:

Given

speed of locomotive
$v=80\ km/h$

distance
$d=9\ km$

Relative velocity of two locomotive
$v_r=80-(-80)=160\ km/h$

Time taken
=(distance)/(speed)

$t=(9)/(160) \hr$

$t=(9)/(160)* 60\ min$

$t=3.375\ min$

Hamelraj answered Sep 1, 2021

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