Posted by jessica on Sunday, February 12, 2012 at 4:25pm.
a. Xo*t = Dx = 92.7 m.
Vo*4.40 = 92.7,
Xo = 92.7 / 4.40 = 21.07 m/s. = hor component of initial velocity.
Yf = Yo + gt
Yo = Yf - gt,
Yo = 0 - (-9.8)(4.4/2) = 21.56 m/s. =
ver. component of initial velocity.
tanA = Yo/Xo = 21.56 / 21.07 = 1.02326.
A = 45.7 Deg. = Direction of initial velocity.
b. Vo=Xo/cosA=21.07/cos45.7=30.15m/s =
Magnitude of initial velocity.
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