KIN 3309 1nd Edition Lecture 11 Outline of Last Lecture I II III IV V VI VII VIII IX X XI XII XIII XIV What is a Projectile Projectile Motion Factors Influencing Projectiles Factors Affecting Trajectory Dropping Something Equations of Motion Tossing an Object Straight Up Two Dimensions How Far Will it Go Problem Two Dimensions Initial Angle Problem Range Flat Ground Problem Range Uneven Ground Problem Quiz Outline of Current Lecture I How to Solve Kinematics Problems II Question 1 III Question 2 IV Question 3 V Question 4 VI Question 5 VII Question 6 VIII Question 7 IX Question 8 X Question 9 XI Question 10 XII Question 11 Current Lecture I How to Solve Kinematics Problems These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute a Step 1 i b Step 2 i c Step 3 i d Step 4 i Identify clearly what the problem is asking Identify the information you are given Identify relationships Combine the given information and the relationships II Question 1 a The resultant vector is 15 71 m s 156 39 degrees III Question 2 a The total path length of the run 7 km b The average speed of the run 2 59 m s c How far the runner was from the beginning 3 6 km IV Question 3 a Her final time 0 33 hours V Question 4 a Horizontal velocity after 4 seconds 20 m s VI Question 5 a Final position 200 m VII Question 6 a Velocity of the ball 4 5 m s VIII Question 7 a Average acceleration during the first 6 seconds 1 83 m s2 b Average acceleration from 6 to 8 seconds 0 m s 2 IX Question 8 a Magnitude of the result velocity 5 m s 53 13 degrees X Question 9 a The time at peak height 0 31 s b Height of the trajectory 1 46 m XI Question 10 a How long it is in the air 4 08 s b Horizontal distance traveled 61 2 m c How long it is in the air if caught 1 m above ground 20 4 m d Horizontal distance traveled if caught 1 m above ground 60 45 m e Angle football traveled 5 31 degrees XII Question 11 a Angle shot traveled 39 8 degrees b Resultant vector 13 3 m s c Time to peak height 0 87 seconds d Height of trajectory 3 72 m e Total height of parabola 5 92 m f Time from apex to ground 1 11 seconds g Total flight time 1 98 seconds h Range of throw 20 10 m
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