Question

CLASS IX PHYSICS
(GRAPH)​

Answer 1

Answer:

B

You might be knowing that the velocity is the slope of displacement time graph.

If you carefully observe the graph given here then you will see that the slope of the graph is constantly decreasing.

This implies that the velocity is constantly decreasing.

This implies that there is negative acceleration.

Answer 2

here is no acceleration because acceleration means ch. of speed in a period of time. But here the graph is about displacement and time . So here the principal sub. is or speed. So here , at first the speed is increasing , and then it is decreasing.