projectile motion

[fireinthehole]

Hi, I am not sure if I am in the correct place but I have a physics exam coming up and i am rather stuck on the projectile motion, i have my head around the rest of physics but projectile frequently stumps me and is worth 16% of my mark. I am wondering if anyone knows a simple explanation, i have been browsing the internet most of the morning but i can only find similar explanations

all help greatly appreciated

Thank you in advance

 

[pyrokid]

V=V₀ + at x = x₀ + v₀t + 1/2at² Separate into vertical and horizontal components with trigonometry.

 

http://www.physicsclassroom.com/Class/vectors/u3l2f.cfm These guys do pretty well.

[BurritoBandito]

I'm assuming that since youre taking this class you have the equations available to you. With that being said, I'm not sure specifically what it is that you're looking for. I would be more than willing to help, but am going to need a bit more info regarding where it is that you're getting stuck.

[Jonathan]

Is this a high school, non-calculus course; or a college course based on vector calculus?

 

The equations pyrokid gives are good for velocity and distance in any one direction (x, y, or z). The quantity "a" is given by Newton's Second Law, F = ma. But question: In defining "a" do you only need to take gravitational force into effect; or do you also need to take air frictional force into account?

 

If you provide an example of the kind of problem you're expected to solve, you can get additional guidance here.

Edited November 7, 2013 by Jonathan

[fireinthehole]

hi, sorry i haven't been here a while i have been busy studying, my main issue is which kinematic to use, am i supposed to treat t as P/2 or p total for the purpose of kinematics, to treat distance as range or distance to top?