If t = 8 sec. for first stone and t = 10 sec. for second stone then why sir has not taken t1 and t2 i.e. different variables for both time period and also in last where he's comparing relative motion of 2 systems in y2-y1 there also both t for 1 and 2 written just as t and not as t1 and t2 . Why ?
6 years ago
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