Get premium membership and access revision papers with marking schemes, video lessons and live classes.
The velocity of a particle after t seconds is given by #V = 20t – 2t^2#. If the particle starts from rest at point O and moves along a straight line; it comes momentarily to rest at point P and starts
moving again back towards O. Determine:
(a) The time when the particle reaches O while on its way back from P.
(b) The expression for its acceleration a.