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Two Particle A and B starts moving with velocity 70m/s and 30m/s and acceleration - 4m/s² and 8m/s².[direction :A to B] at which two-time they meet?​

Answer»

10 secExplanation:this question is very easy by using CONCEPT of relatives velocity. UAB =Va-Vb =70-30 =40m/sAcc.ab = Aa-Ba =4-8 =-4m/s²now v = u+atVab=uab-aab. tsince body meet FINAL RELATIVE velocity (Vab ) =00 = 40-4t 4t = 40t=10 sec



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