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Vectors and 2d-Kinematics Continued. Comments on Homework Summary of Vectors and 2-d Kinematics Homework Solutions. Homework Results Vectors and 2-d kinematics. Awesome Job!. Average=87% No attempt = 14 . See Me or TAs. Homework 1 results. Average=62.5% .
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Vectors and 2d-KinematicsContinued Comments on Homework Summary of Vectors and 2-d Kinematics Homework Solutions
Homework Results Vectors and 2-d kinematics Awesome Job! Average=87% No attempt = 14 See Me or TAs
Homework 1 results Average=62.5% Among those who made an attempt Average=74.7%
Questions/Suggestions For this situation the horizontal component of the velocity remains constant. The vertical component of velocity changes due to the gravitational acceleration. Kinematic equations for displacement,velocity and acceleration are the source for the derived equations. Each component can be treated separately. Remember that they are component of a vector
Source of Projectile Trajectory Equations Vertical Horizontal Boring
Ballistic Projectile Motion Quantities Initial velocity speed,angle Maximum Height of trajectory, h=ymax “Hang Time” Time of Flight, tf Range of trajectory, D Height of trajectory at arbitrary x,t
Derived Projectile Trajectory Equations Maximum height Time of Flight (“Hang Time”) Range of trajectory Height of trajectory as f(t) , y(t) Height of trajectory as f(x), y(x)
Homework Hints – Stadium Wall Calculate time to reach wall using vx: Calculate y position at time to reach wall:
Homework Hints-Catch 2 Vxis constant ! v Kinetic energy should be same as when ball was thrown. Y-component of velocity would be downward.
Homework Hints-Catch 2 Same conditions as before
Homework Solutions-Catch 2 Vxis constant ! v Kinetic energy should be same as when ball was thrown. Y-component of velocity would be downward.
Homework Solutions-Catch 2 Same conditions as before
vtrain car Time spend in the air depends on the maximum height Maximum height depends on the initial vertical velocity
Trigonometric Identity for range equation http://mathworld.wolfram.com/Sine.html http://mathworld.wolfram.com/Cosine.html
Trigonometric Identities relating sum and products List of trigonometric identities
Hyperphysics-Trajectories http://hyperphysics.phy-astr.gsu.edu/hbase/traj.html