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Two cars `C_(1) & C_(2)` are moving in parallel lanes in the same direction at speeds `90kph & 108kph` respectively (see figure). As the traffic signal turns red, both applies brake (assume constant retardation) simultaneously. If they both stop together at the dead lineA. distance of dead line from `C_(2)` is `300m`B. destance of dead line from `C_(1)` is `250m`C. time taken by the cars to ends up after the signal turn red is `15sec`.D. time taken by the cars to ends up after the signal turn red is `20sec`. |
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Answer» Correct Answer - `A::B::D` (i) Relative initial velocity `=5 m//s`, relative final velocity `=0` Relative displacement `=50m` Relative acceleration `=` constant `rArr 50=((5+0)/(2))t rArr txx20sec.` (ii) Distance of dead line from car `C_(1)=((25+0)/(2))xx20=250m`. |
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