The graph as shown in. below descrines the motion of a ball rebounding from a horizontal surface being released from a point above the surface. Assume that the ball colledes each time with the floor inelastically. The quantity represented on the y-axis in the is the ball`s (take upward direction as positive)
.

Options

A. Displacement
B. Velocity
C. Acceleration
D. Momentum

Answer

A

Explanation

We know that for a body throun up, its displacement is gimen as `S=ut -(1)/(2) g t^(2)`. So the `s-t` graph is parabolice downwards,
Also the ball collides inelastically, so it will revound to hass height every time as shown in the graph `t_(1), t_(2)`, `t_(3)`, are the instants when the ball colledes with ground, Here slope of the `s-t` graph is suddenly changing from negatibe (downwrds) and agter collision is positive (upwards).