Self Exercise 8.4 Question 2

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 a) the instantaneous velocity, in , of the particle when t=2,

b) the values of t, in seconds, when the particle stops instantaneously,

c) the range of values of t, in seconds, when the car moves to the right.