7. Show the shape of the distance-time graph for the motion in the following cases:
(i) A car moving with a constant speed.
(ii) A car parked on a side road.
(i) A car is moving with a constant speed covers equal distance in equal interval of time. Therefore,
(ii) Distance-time graph of a car parked on a roadside is such that an increase in time, there is no change in distance.