how did the children help the author
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tell me the chapter name
when you tell the chapter name ,,we can help you
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i am sorry to saying this
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In each of the above equations, the vertical acceleration of a projectile is known to be -9.8 m/s/s (the acceleration of gravity). ... The initial y-velocity (viy) can be found using the equation viy = vi•sine(Theta) where Theta is the angle that the velocity vector makes with the horizontal.
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