the angle is 90 because it is launched horizontally.
enjoy
A horizontal drainpipe 6m above sea level empties stormwater into the sea. If the water comes out horizontally and reaches the sea 2m out from the pipe, find the initial velocity of the water, correct to 1 decimal place. let g = 10ms^-2 and neglect air resistance.
Answer = 1.8ms^-1
the angle is 90 because it is launched horizontally.
enjoy
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so should i be using the angle of projection = 0 or 90? :S
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no angle, all forces are already in the same vertical plane
there is only a gravitational force down (ignoring air resistance)
i.e F=mg => y(double dot) = g
If wind resistance is taken into account,
y(double dot) =g-R/m
can someone please show me the entire method of solving this question using the angle = 0.
B Civ. Eng. (Structural) III @ UNSW
mate, when t=0,y=6, so y does not equal to gt^2/2, also you forgot to +c
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