Two trains are moving with velocities `v_1 = 10 ms^-1 and v_2 = 20 ms^-1` on the same track in opposite directions. After the application of brakes if their retarding rates are `a_1 = 2 ms^-2 and a_2 = 1 ms^-2` respectively, then the minimum distance of separation between the trains to avoid collision isA. 150 mB. 225 mC. 450 mD. 300 m

Two trains are moving with velocities `v_1 = 10 ms^-1 and v_2 = 20 ms^

1.	Two trains are moving with velocities `v_1 = 10 ms^-1 and v_2 = 20 ms^-1` on the same track in opposite directions. After the application of brakes if their retarding rates are `a_1 = 2 ms^-2 and a_2 = 1 ms^-2` respectively, then the minimum distance of separation between the trains to avoid collision isA. 150 mB. 225 mC. 450 mD. 300 m
Answer» Correct Answer - B `d=d_1+d_2` `=(v_1^2)/(2a_1)+(v_2^2)/(2a_2)` `((10)^2)/(2xx2)+((20)^2)/(2xx1)` `=225m`

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