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A skateboarder rolls off a horizontal ledge that is 1.32 m high, and lands 1.88 m from the base of the ledge. What is the initial velocity?

 Nov 4, 2016
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I'm not great at Physics questions, but I'll give this one a try....

 

We first need to calculate the time it takes the skateboarder to hit the ground......

 

-1.32 = -4.9t^2     divide both sides by -4.9

 

1.32/4.9 = t^2     take the positive root of each side

 

t ≈ .52s

 

Then......Distance = Rate * Time   →   Distance / Time = Rate.......so....

 

1.88m / .52s  ≈  3.62 m/s 

 

 

cool cool cool

 Nov 4, 2016

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