Respuesta :

SJ2006
We know, a = (v₂-v₁) / (t₂-t₁)
Here, v₂-v₁ = 19 m/s
t₂-t₁ = 2 s

Substitute it into expression, 
a = 19/2
a = 9.5 m/s²

So, your final answer is 9.5 m/s²

Hope this helps!
Batman1324
The correct answer is 9.5 m/s^2. I just took this test.

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good job