See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

2t if 0 t 15 sec v 9 150 30(t 15) if 15 s t 40 s            at t = 15 sec 3 15 15 v 150 3     m/s 3 2 2t ˆj if 0 t 15 sec r 3 ˆ 150 150(t 15) 15(t 15) j if 15 s t 40 s               at t = 15 2 15 15 15 r 750 3 3       m 25. x v 1   x = t and vy = 6t  y = 3t2  y = 3x2  dy 6x dx  , 2 2 d y 6 dx   2 x 3 dy 2 2 dx   As we know that 3/2 2 3/2 2 2 dy 1 dx (1 8) R