## Question

A player throws a ball which reaches the other player in 4 seconds. If the height of each player is 1.8 m, what is the maximum height attained by the ball above the ground?

### Solution

21.4 m

The time of flight,

.

Since *t* = 4*s*,

.

Now,

.

Height above the ground = 19.6 + 1.8 = 21.4 m.

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