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Two trains A and B, 100 km. apart, are travelling towards each other with starting speeds of 50 km/hr. for both. The train A is accelerating at 18 km/hr2 and B is decelerating at 18 km/hr2. Findthe distance (in km) from the initial position of A of the point when the engines cross each other.A100 |
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Answer» Distance between TRAIN A and train B = 100 KmRight direction -----> taken positive +veLeft direction <------- taken negative -veSpeed of train A 50 km/hr SPEED of train B -50 km/hrAcceleration of train A = 18 km/hr SQ.Acceleration of train B = - 18 km/hr sq.RELATIVE MOTIONSpeed(u) = 50 - (-50) = 100 km/hrAcc = 18 - (-18) = 36 km/hr sq.s = ut + 1/2 at sq.100 = 100(t) +18(t sq)9t sq + 50t -50 = 0Explanation:FOLLOW me...Follow me...Plz mark brainlist... |
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