The height (in meters) of a projectile shot vertically upward from a point 2 m above ground level with an initial velocity of 24.5 mys is h 2 1 24.5t 2 4.9t 2 after t seconds. (a) Find the velocity after 2 s and after 4 s. (b) When does the projectile reach its maximum height? (c) What is the maximum height? (d) When does it hit the ground? (e) With what velocity does it hit the ground?

MILESTONES FINAL STUDY GUIDE Methodology Lecture 1. Sample and Population 1. Population the group of elements you wish to estimate (e.g., all college students) 2. Sample a subset of elements selected from the population 3. Sampling Frame the list of sample units from which you select (e.g., MSU student directory) 2. Sampling Methods 1. Probability Vs. NonProbability Probability Sampling • each elements chance of being in the sample is specified Non Probability Sampling • You cannot specify each elements chance of being in sample 2. When to use what • Probability: Better for het