Latihan Kendiri 8.1 Soalan 1
A particle moves along a straight line and pasees through a fixed point O. Its displacement, s m, is given by s=2t2-5t-3, where t is the time in seconds after the movement begins. Suatu zarah bergerak di sepanjang suatu garis lurus dan melalui satu titik tetap O. Sesarannya, s m, diberi oleh s = 2t2 – 5t – 3, dengan t ialah masa dalam saat selepas gerakan bermula. (a) Find the instantaneous displacement, in m, of the particle when (a) Cari sesaran seketika, dalam m, zarah itu apabila (i) t = 0 (i) t=0
(ii) t=2. (ii) t=2.
(b) Find the time when the particle (b) Bilakah zarah itu (i) passes through point O, (i) mula melalui titik O,
(ii) is 9m to the right of point O? (ii) berada 9 m di sebelah kanan titik O?
(c) Determine the range of time, in seconds, when the particle is to the right of point O. (c) Tentukan julat masa, dalam saat, apabila zarah itu berada di kanan titik O.