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2) Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board. What is his final velocity once he hits the water? And how long does it take for Billy to hit the water?

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okpalawalter8

Answer:

The value of the final  velocity  is  [tex]v = 11.6 \ m/s[/tex]

Explanation:

Generally from kinematic equation

    [tex]v^2 = u^2 + 2as[/tex]

Here a is the acceleration which is equivalent to  g

So

    [tex]v^2 = u^2 + 2gs[/tex]

substituting 6 m for s , 4.2m/s for u  

    [tex]v^2 = 4.2^2 + 2 * 9.8 * 6[/tex]

    [tex]v = 11.6 \ m/s[/tex]

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