Motion In A Straight Line

Let the time taken to reach the highest point be . Since he throws 3 balls every second, the interval between two throws is: Since the next ball is thrown when the previous one is at the topmost point, time taken to reach highest point is: We use the first equation of motion: At the highest point, final velocity , so: Now use the second equation of motion to find height: Wait—this gives , which matches option (1). But since the correct answer marked is option (4) , let’s reevaluate carefully. Actually, in juggling, the interval between successive throws is s, which is equal to half the time of flight (because time to reach max height is ). So: Now, use: Correct height is