a bullet field at an angle of 30degreeswith the horizontal hits the ground 3 km away.by adjusting
Asked by | 26th Jul, 2009, 12:46: AM
Expert Answer:
WE know, R = u2sin2θ / g
Therefore the ratio of horizontal ranged R1 and R2 for angle of projections θ 1 and θ 2 is
R1/ R2 = sin2θ1 / sin2θ2
Therefore, sin2θ2 = R2sin2θ1 / R1
Here, θ1 = 30o , R1 = 3km , R2 = 5 km
so, sin2θ2 = sin 60o x ( 5/3) = 1.443 ( greater than 1 )
which is not possible .
Therefore, it is not possible to hit the target by adjusting the angle.
Answered by | 26th Jul, 2009, 12:19: PM
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