If an object is thrown vertically upwards at an initial velocity of n ms-1 (metres per second) and returns to the point where it began, the final velocity will be n ms-1 and the velocity at the highest point reached will be 0 ms-1. But....what would be the shape of the velocity-time plot? Would it be an upside down parabola or would the acceleration/retardation be uniform (surely it would because g=9.81 ms-2) giving an upside down V-shape? I think it's an easy question but I can't quite decide which is true!!