Question
Bahasa Melayu
Suatu zarah bergerak di sepanjang suatu garis lurus. Zarah itu melalui satu titik tetap $O$ pada masa $t = 0$, dan halajunya, $v$ ms$^{-1}$, pada masa $t$ saat diberi oleh $v = 2t^2 - 5t - 12$. Gerakan ke arah kanan diambil sebagai positif. Cari jumlah jarak, dalam m, yang dilalui oleh zarah itu dari ketika halajunya minimum sehingga $t = 7$. Beri jawapan betul kepada dua tempat perpuluhan.
English
A particle moves in a straight line. It passes a fixed point $O$ at time $t = 0$, and its velocity, $v$ ms$^{-1}$, at time $t$ seconds is given by $v = 2t^2 - 5t - 12$. Motion to the right is taken as positive. Find the total distance, in m, that the particle travels from the instant when its velocity is minimum until $t = 7$. Give your answer correct to two decimal places.
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Modelled on Selangor trial · Kertas 2 · Q12(b)
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Modelled on Selangor trial · Kertas 2 · Q12(b)
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