Engineering science N4

Calculate the angle of projection of a projectile in order to hit a target 12km away.the initial velocity is 700m/s ant the time of the flight is 80seconds.

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asked by Mike
  1. Distance = Vo^2*sin(2A)/g = 12000 m
    700^2*sin(2A)/9.8 = 12000
    50000*sin(2A) = 12000
    sin(2A) = 12000/50000 = 0.240
    2A = 13.9o
    A = 6.94o

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    posted by Henry

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