Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process
Velocity only
Displacement and velocity
Acceleration, velocity and displacement
Displacement and acceleration
Position time graph of a particle moving along straight line is shown which is in the form of semicircle starting from $t=2$ to $t=8 \,s$. Select correct statement
The graph below shows the velocity versus time graph for a body.
Which of the following graphs represents the corresponding acceleration $v/s$ time graph ?