[sam2011]

?

A projectile is fired from the ground with an initial velocity of 82 m/s at an angle of 55 above the horizontial .
1- What are the initial x and y componets of the velocity ?
2- What is the x component of the projectile 1.2 s after being fired , relative the firing point?
3- What is the y component of the projectile 1.2 s after being fired , relative the firing point ?

[jcaron2]

Let's start with part 1 (the other two are pretty straightforward after that):

You have the angle, and you have the total velocity. Do you know how to find the x- and y-components of the velocity if you have those two things? What mathematical property of an angle gives you it's x-component? And y?