PHYS111 Lecture 2: Week 2 Summary.docx
3 Apr 2014
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Write down the properties you know draw a diagram choose where x=0 and positive direction determine the signs of all vectors choose the appropriate kinematic equation(s) > it may be more than 1 to get the final answer. A projectile is any object which is shot into the air with an initial velocity (v0). * this does not include planes, rockets or anything with a working engine. * the only force working on the projectile is gravity. Equations (eg. monkey falling from a tree + hunter) Y= v0t - 0. 5gt2 h= v0t k= 0. 5(gt2) where: Y= v0t - 0. 5gt2 = h k. *motion in the vertical and horizontal directions are independent, however t" is common. Y -> vy=vy0 gt & y= v0t - 0. 5gt2 vy)/2 x t. The outer subscript on the right must be the same as those of the resultant vector.
