KVPY SA Exam 2013 Question Paper

A ball is thrown horizontally from a height with a certain initial velocity at time $\mathit{t}=0$. The ball bounces repeatedly from the ground with the coefficient of restitution less than 1 as shown. Neglecting air resistance and taking the upward direction as positive, which figure qualitatively depicts the vertical component of the ball's velocity $\left({\mathit{v}}_{\mathit{y}}\right)$ as a function of time (t)?