posted by sean de la Harpe .
A small object travels with a velocity of v=4-t^2 where t is the time in seconds, recorded from t=0, and v is the velocity in metres/second.
a) Draw a graph of v(t) for 0¡Üt¡Ü3.
c) Use a suitable geomentric method to caculate the area enclosed by the graph and the x-axis for 0¡Üt¡Ü3.
d) Describe what has been calculated in (b) and (c) in terms of the journey of the object.