Name the two quantities, the slope of whose graph gives
(i) Speed
(ii) Acceleration.

6 A body moving along a straight line at 20m/s undergoes an acceleration of 4m/s². After two seconds,  what will its speed will be, exactly after 2seconds? 7 A car increases its speed from 20km/h to 50km/h in 10 seconds. Find its acceleration. 9 What can you say about the motion of a body whose distance-time graph is a straight line parallel to the time axis? 10 Define average speed with example.