Question

A fighter plane flying horizontally at an altitude of 2 Km at speed of 200m/s passes directly above the aniti-aircarftgun.what is the minimum muzzle speed and at which angle from the vertical it should be fired to hit?

Answer 1

have you figured out the problem in the Q ... i particularly hate literature part.

Answer 2

just what does this mean?
"minimum muzzle speed so that it will make a hit"

Answer 3

for the minimum speed, the shell hits the plane at the highest point in its trajectory

Answer 4

no ... this means your minimum height of the shell must be 2km

Answer 5

nop it should be max...........so that we can use u^2/2g = 2000

Answer 6

and what must be you min?

Answer 7

here min velcoity means the min velocity req to hit the plane

Answer 8

where would be the minimum height? so that i would touch the plane?

Answer 9

so..hw do u figure out that? we dont have any method to find min h

Answer 10

why don't we have ... ?
we have ...
let vertical component of the velocity = y
and horizontal component be = x

Answer 11

sorry ... let it by
we will use x, y for other purposes.