Lecture 4 Notes (PDF) - SFSU Physics & Astronomy

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Free Fall -- Object thrown upward • Initial velocity is upward, so positive • The instantaneous velocity at the maximum height is zero • a = -g everywhere in the motion • a is always downward, negative v = 0 15 Thrown upward • The motion may be “symmetrical” (object starts and ends at same height) – then t up = t down – then v f = -v o • The motion may not be symmetrical – Break the motion into various parts • usually up part and down part 16
Graphical example: A ball is thrown upward from the ground level. x = ball’s height above the ground Velocity is positive when the ball is moving upward Why is acceleration negative? Is there ever deceleration? 17 Object Thrown Upward (Symmetric) Position-time plot: Position Velocity Acceleration 18
Page 1 and 2: Physics 111.01 Lecture 4 (Walker: 2
Page 3 and 4: Solving the problem • What is kno
Page 5 and 6: Free Fall • Objects moving under
Page 7: v = - y = y = - v = - y = - Free fa
Page 11 and 12: Example: The Flying Cap Upon gradua
Page 13 and 14: Vector Notation • When handwritte
Page 15: More About Components of a Vector

Lecture 4 Notes (PDF) - SFSU Physics & Astronomy

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