Posted by someone on Sunday, August 2, 2009 at 1:29am.
The time the shot rises is Vsin40/g = 0.917s. The distance it rises in that time is t1 = (g/2)(0.917^2) = 4.12m.
To reach the ground, it must fall 6.32 m from the highest point. This requires a length of time
t2 = sqrt(2*6.32m/g) = 1.135s
The total time of flight is t1+t2 = 2.052s
The distance travelled is
V cos40*2.052s = 22.0 m
I used 9.81 m/s^2 for g. We essentially agree.
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