Projectile problems (Stuck at equation and answer)

[Leejia]

Homework Statement

A missile is to be launched from a point P 500m from the peak of a hill of height 2000m into enemy territory. If the missile is just pass over the hill and strike a target 1200m from P, calculate the velocity at which the missile should be launched (140 ms^-1 horizontally to 19 degree )

Relevant Equations

V=u+at
S=ut+1/2at^2
X=usin$ t

Hi i get the answer about 203.xxx ms ^–1 and 81.7 degree but the book answer given is not similar to my answer, So I hope helper can help me verified this ans

 

[mpresic3]

Seems like your relevant equation does not contain gravity. Shouldn't there be some contribution of gravity to the problem.

 

[Leejia]

I just editted sorry

 

[PeroK]

I just editted sorry

You have to make your best attempt at this problem. See the guidelines for homework:

https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

 

[Dr Transport]

first draw a diagram