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Speed time graph of two cars `A` and `B` approaching towards each other is shown in figure. Initial distance between them is `60m`. The two cars will

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Speed time graph of two cars `A` and `B` approaching towards each other is shown in figure. Initial distance between them is `60m`. The two cars will cross each other after `t` secons. Find value of it `t`.
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xA + xB = 60 m/s 

ut + 1/2at2 + ut-1/2at2 = 60

0 × t + 20 × t = 60

t=3seconds


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