A graph of x versus t is shown in figure. Choose correct alternatives given below.

Options

A. The particle was released from rest at `t =0`
B. At B, the acceleration `a gt 0`
C. Average velocity for the motion between A and D is positive
D. The speed at D exceeds that at E

Answer

A, C, D

Explanation

As A is the starting point, we can say that the particle is starting from rest.
At C, the graph changes slope, hence, velocity also changes. As graph at C is almost parallel to time axis. So that velocity vanishes.
As direction of acceleration changes hence, we can say that it may be zero in between. From the graph it is clear that Slope at DI `gt ` |Slope at El Hence, speed at D will be more than at E.