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derek181
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Homework Statement
Determine the minimum initial velocity V0 and the corresponding angle theta at which the ball must be kicked in order for it to just cross over the 3 m fence.
Given:
Horizontal distance=6m
vertical distance=3m
Homework Equations
equation 1: Vy2=(V0)2+2a(y-y0)
equation 2: Vy=(V0)y+at
equation 3: X=X0+(V0)xt
The Attempt at a Solution
Using equation 1
0=V0y+(2)(-9.81)(3-0)
Voy=7.67m/s
using equation 2
0=V0y+(-9.81)t
t=.782s
using equation 3
6=0+V0x(0.782)
V0x=7.67m/s
V0=√(7.672+7.672)
=10.85m/s
θ=45°
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