Show that to hit a target h metres above what was its maximum range position on
a horizontal plane, the initial speed of a projectile projected at the same angle as before, must be increased from V to m/s (air resistance is neglected.)
I had the equations of motion as
Putting y = 0
t = 0 or
thus max range is
new projectile must hit
what shall I do next?
I gather that my new speed must have theta in it. however, the question does not have a theta. There is nothing I can do that eliminates the theta. Is the question wrong?