/sci/ - Science & Math

oi /sci/, got a bit of a problem here!!
Ive got this question for physics but my answers
which where a.) 8.81m/s and b.) 1.465 s, were wrong,

the question is: During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. Figure 4-51 shows a cross section of Mt. Fuji, in Japan. (a) At what initial speed would a bomb have to be ejected, at angle θ = 34˚ to the horizontal, from the vent at A in order to fall at the foot of the volcano at B, at vertical distance h = 3.30 km and horizontal distance d = 10.7 km? Ignore, for the moment, the effects of air on the bomb's travel. (b) What would be the time of flight?

<----- its pic related

so could u help me out pleasseeeeee