Latihan Formatif 8.2 Soalan 4

A particle moves along a straight line. Its displacement, s metres from the fixed point O time t is given by at time t is given by . Find Suatu zarah bergerak di sepanjang satu garis lurus. Sesarannya,s meter, dari titik tetap O pada masa t saat diberi oleh . Cari a) the instantaneous velocity, in , of the particle when t=2, halaju seketika zarah, dalam , apabila t=2,

b) the values of t, in seconds, when the particle stops instantaneously, nilai-nilai t, dalam saat, apabila zarah itu berhenti seketika,

c) the range of values of t, in seconds, when the car moves to the right. julat nilai t, dalam saat, apabila zarah itu bergerak ke kanan