Question

give the answer of question number 9 10 11

Answer 1

9th question I'll attach picture.
(I think I took variable A instead of B and B instead of A.sorry for inconvenience.)

For 10 th question
the vertical velocity at the highest point becomes zero due to acceleration of gravity(here for upside it is deceleration).
But not horizontal velocity doesn't vanish.so horizontal velocity is not zero.

hence vertical velocity at highest point ( here A ) is zero.


For 11th question.

if motion is uniform means a constant acceleration or deceleration.
Constant stand for a finite value of acceleration or deceleration that may be zero or else.

In case of zero acceleration the graph line is parallel to x axis.(means constant velocity,so horizontal line).(option B)
In case of acceleration the graph is straight line with increasing slope.
In case of deceleration the graph is straight line with decreasing slope.
option C cannot be because acceleration cannot be infinite.(as slope will be infinite)

But for non uniform motion acceleration and deceleration both comes in mixture,so graph is no more straight line for small intervals also ,hence It should be curved .
hence correct and should be curved (option A).

May be it helpful for you.