Projectile motion... again.... =_= (1 Viewer)

[Smilebuffalo]

A stone is projected horizontally from the top of a building 30m high with a velocity of 15m/s. At the same instant another stone is projected from the foot of the building with a velocity of 30m/s at an angle of 60* to the horizontal. The two stones move in the same vertical plane. Prove that they collide, and if the coordinates of the foot of the building at (0,0), find the coordinates of the point of collision.

 

[gurmies]

http://img268.imageshack.us/img268/1976/scan0001hj.jpg

 

[Smilebuffalo]

LOL thanks a whole bunch Gurmies.

But don't be surprised if i post more questions later

 

[gurmies]

LOL thanks a whole bunch Gurmies.

But don't be surprised if i post more questions later

No worries - just understand that the method to almost all of these questions is the same. Write down all the information you know and try to make use of it

 

[xMaFF]

Wow. >.>
That's extension math for you.

I'm going to attempt it next year for prelims xD
If I've got questions, I know who to ask.

~Gurmies! >w<
(Lawliet from Death Note)

 

[Smilebuffalo]

oooh okay. i've just been having difficulty with questions where two particles collide. do we normally just solve simultaneously equations?

 

[gurmies]

Well, I would say that's the easiest way, however I could be wrong.

 

[jet]

I would agree.