From the top of a tower of height 50m, a ball is thrown vertically upwards with a certain velocity. It hits the ground 10 s after it is thrown up. How much time does it take to cover a distance π΄π΅ where π΄ and π΅ are two points 20m and 40m below the edge of the tower? (g = 10ms β2 )

Question : From the top of a tower of height 50m, a ball is thrown vertically upwards with a certain velocity. It hits the ground 10 s after it is thrown up. How much time does it take to cover a distance π΄π΅ where π΄ and π΅ are two points 20m and 40m below the edge of the tower? (g = 10ms β2 )