please i need anyone who is good in projectile. My lecturergave us this assignment and ineed ur help please. The questions goes thus
1. A STONE IS THROWN FROM THE TOP OF CLIFF 150M HEIGHT FROM THE SEA LEVEL AT AN ANGLE OF 30DEGREES, BELOW THE HORIZONTAL AND IT HITS THE SEA 40M FROM THEBOTTOM OF THE CLIFF. CALCULATE
a. INITIAL SPEED OF THE STONE
b. TOTAL HORIZONTAL DISTANCE COVERED
c. DIRECTION IN WHICH IT IS MOVING WHEN IT HITS THE SEA/take g as 9.8m/s2
thanks in anticipation and please show working

sorry man, u need to draw it bro, b4 u can solve it. get d diagram wrong n u will get the calculation wrong

Like Ironheart suggested, you need to first draw the diagram to visualise the situation. Then write all the formulas you need.

To be honest, I have not attempted a projectile question recently, though the a and b questions should just be a matter of plugging in formula ( or use equation of motion, you would need to modify it abit).

Anywayz am sure some of the smart dudes on here can help better

SunTzu
Know yourself

@OP,

Seriously?
You're now bringing homework to Nairaland?

https://www.nairaland.com/siloko26/posts

Siloko26: please i need anyone who is good in projectile. My lecturergave us this assignment and ineed ur help please. The questions goes thus
1. A STONE IS THROWN FROM THE TOP OF CLIFF 150M HEIGHT FROM THE SEA LEVEL AT AN ANGLE OF 30DEGREES, BELOW THE HORIZONTAL AND IT HITS THE SEA 40M FROM THEBOTTOM OF THE CLIFF. CALCULATE
a. INITIAL SPEED OF THE STONE
b. TOTAL HORIZONTAL DISTANCE COVERED
c. DIRECTION IN WHICH IT IS MOVING WHEN IT HITS THE SEA/take g as 9.8m/s2
thanks in anticipation and please show working

There is an equation which describes the trajectory of a projectile expressed in terms of y,x and the angle below the horizontal,I dont remember the exact expression though,it's been a while.When you apply the equation,u can easily get the initial velocity.
For the (b) part,once you get the value of the initial velocity,you can apply the equation of motion and (c) wont be difficult either

It seem dat u don't good in physics, then why do u go to physics?

@op why not ask ur mates?

@OP
The question is quite simple. All your u need are the basic equations of motion. From the question, u take V=0, and use Vsquare=Usquare - 2gs, to get the initial velocity U. Remember the S in this equatn is 110, since the stone hits the target 40meters 4rm the bottom. U then proceed to get the time of flight T. The (b) Part of the question is refering to the range(along the x-axis), use the formular X=UT. I hope i've helped u enough. As an exercise, do the (c) part and let us know the answer.