Question 4
Teacher Azizah conducted an experiment to determine the velocity of the trolley along a straight track. The velocity, v cms-1, of the trolley after passing the fixed point O is given by .
[Assume the movement to the right is positive]
Find
(a) the initial velocity, in cms-1, of the trolley,
(b) the range of time, in seconds, when the trolley is moving to the left,
(c) the range of time, in seconds, when the acceleration of the trolley is positive.