A particle P is moving along the xaxis. . 2 . . . . . At tune! seconds, where 0 S I 5 3 . P 15 1 metres from the ongm 0 and Is movmg with velocity v n1 5-] in the positive x direction where 3 1:01: +1)E When I = 0, P passes through 0. {:1} Find the value of I when the acceleration of P is 243 m s"- (5) {b} Find v in terms of t. (6)