Can somebody help me with this Q asap... Plz c attached image
Can somebody help me with this Q asap... Plz c attached image
Adeel , 7 Years ago
Grade 12th pass
Mechanics> Can somebody help me with this Q asap... ...
1 Answers
Arun
Dear Adeel
Height of the fighter plane = 1.5 km = 1500 m
Speed of the fighter plane, v = 720 km/h = 200 m/s
Let θ be the angle with the vertical so that the shell hits the plane.
Muzzle velocity of the gun, u = 600 m/s
Time taken by the shell to hit the plane = t
Horizontal distance travelled by the shell = uxt
Distance travelled by the plane = vt
The shell hits the plane. Hence, these two distances must be equal.
uxt = vt
usinΘ = v
sinΘ = v/u
sinΘ = 200/600
= 1/3
Θ = sin-1(0.33)
Θ = 19.5 degrees
Regards
Arun (askIITians forum expert)
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