PPYQ A man throws some balls with the same speed vertically upwards one after the other at an interval of 2 seconds. What should be the speed of the throw so that more than two balls are in the sky at any time? (Given g = 9.8 m/s2) 1. More than 19.6 m/s 2. At least 9.8 m/s 3. Any speed less than 19.6 m/s 4. Only with speed 19.6 m/s Ruhul Amin Alig
PPYQ If a ball is thrown vertically upwards with speed u, the distance covered during the last ‘t’ seconds of its ascent is: 1. ut 2. 1 2 gt 2 12gt2 3. ut − 1 2 gt 2 ut-12gt2 4. ( u + gt ) t (u+gt)t Ruhul Amin Alig
