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A projectile is fired from the surface of level ground at an angle Ao above the horizontal.
A) Show that the elevation angle B of the highest point as seem from the launch point is related to Ao by tanB = (1/2)tanAo
B) Calculate B for Ao = 45 deg
So
I figure at the highest point, Vy must equal 0.
let H be height of launch
let R by range of launch
so tanB = H/(1/2)R
and tanB = (1/2)tanAo
therefore
H/(1/2)R = (1/2)tanAo
tanAo = H/(1/4)R
I'm not sure how to proceed, do I want to derive H or R in terms of velocity/acceleration?
Thanks,
A) Show that the elevation angle B of the highest point as seem from the launch point is related to Ao by tanB = (1/2)tanAo
B) Calculate B for Ao = 45 deg
So
I figure at the highest point, Vy must equal 0.
let H be height of launch
let R by range of launch
so tanB = H/(1/2)R
and tanB = (1/2)tanAo
therefore
H/(1/2)R = (1/2)tanAo
tanAo = H/(1/4)R
I'm not sure how to proceed, do I want to derive H or R in terms of velocity/acceleration?
Thanks,