Answer:
0.79 s
Step-by-step explanation:
The initial velocity of the ball is,
.
And now we know that first equation of motion.

Here, v is the final velocity, u is the initial velocity, t is time taken by the object, a is the acceleration.
Given that, final velocity is zero and ball is inb upward direction means opposite to acceleration due to gravity which means a=-g. and the value of g is

Therefore,

Therefore, it is the required minimum time that player must waiot to touch the ball.