A boy steps off the end of a 3.00 m high diving board and drops to the water below. Using 9.8 m/s2 as acceleration due to earth's gravity, how many seconds does it take for him to reach the water? Only enter the number, not the units.

t = 0.78 s

Explanation:

Given that,

The height of a diving board, h = 3 m

We need to find the time it take for him to reach the water. Let the time is t./

Using second equation of motion as follows :

u is initial velocity, u = 0 and a = g

So,

So, it will take 0.78 seconds to reach the water.

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