Question

choose vt graph from otions pls answer with reason

Answer 1

Given in problem that the ball is thrown up, let us say with an initial velocity, say v. As the ball travels up, the acceleration due to gravity, opposes the motion of the ball. The magnitude of acceleration due to gravity, can be safely assumed to remain constant. Thus, results in reduction of velocity of the ball to zero, by the time it reaches top of climb. Thereafter, the velocity starts increasing, however in opposite direction, that is towards the earth. Hence, the most suitable graph representing the change in velocity is shown in option number 3