A ball is dropped and its displacement vs time graph is as shown in Fig. 2 (EP) .7 (displacement (x) is grom ground and all quantities are +ve upwards). (a) Plot qualitvely velocity vs time graph). (b) plot qualitatively acceleration vs time graph .

Explanation

As (x) is positive upwareds and ball is dropped from from a heitht, so velocity of ball increases downwards due to gravity pull. Therefore, (v) is negative. The acceleration of the ball is downwards and is equal to acceleration due to gravity (=- g). After rebound the ball goes upwards, its velocity is positve, but acceleration is-g. Therefore,slope ` v-t` graph is same at every rebunding of ball.
(a) The velocity vs time graph is shown in Fig. 2 (EP). 8 (a) and
(b) acceleration vs time graph is shown in Fig. 2 (EP) .8 (b).
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