question_answer

A ball is thrown vertically upwards. Which of the following graphs represents the speed (v) - time (t) graph of the ball during its height of the air resistance is not ignored? (a)                       (b) (c)                        (d)

Answer:

During upward motion, the gravity effect and air resistance will oppose its motion. Due to which the speed of the body decreases and becomes zero at highest point. After wards the body moves downwards due to gravity pull but air resistance opposes still the velocity of body increases.