(General PHY:Motion Q3) A cat has the x- and y- coordinates (9.9 m, 8.5 m) at t1=0.3 s and coordinat
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1A cat has the x- and y- coordinates (9.9 m, 8.5 m) at t1=0.3 s and coordinates (25.5 m, 86.4 m) at t2=6.2 s. For this time interval, find the y-component of the average velocity (the unit is ms-1)
一隻貓在 t1=0.3s時的座標為 (9.9 m, 8.5 m)，在 t2=6.2s時的座標為 (25.5 m, 86.4 m)。求在此時間間隔內，平均速度的 y 分量（單位為 m/s）。
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