Class 5

# Class 5 - 1 1-D Kinematics: Acceleration Physics 1301, Fall...

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2 1-D Kinematics: Acceleration Physics 1301, Fall 2011: Class 5 Tuesday, September 13, 2011 HW Question 6b Tutorial Room Career Fair Today Dark Matter Sept.
3 Objectives: Tuesday, September 13 Kinematics of 1-d Motion; Constant Acceleration Problems in 1-d motion

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4 Demonstrations 1c20.12 Hammer and feather on moon 1c20.16 Ball & paper
5 Kinematic Graphs Draw a graph. Label the horizontal axis t for time. Label the vertical axis x for distance. Put arbitrary units on the graph: 0 to 5 on both axes Now graph the motion of a person as follows: At t = 0, she starts at x = 3 and stays there for a short interval She then runs to x = 1 and stays there for a short time She then walks slowly back to x = 3

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6 Kinematic Graphs
7 Problem A marathon runner runs at a steady 15 km/h. When the runner is 7.5 km from the Fnish line, a bird begins ±ying from the runner to the Fnish line at 30 km/h. When the bird reaches the Fnish line, it returns to the runner at the same speed. The bird then continues to ±y back and forth between the runner and the Fnish line until the runner Fnishes the race. How far does the bird ±y (km)?

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8 Gauss Problem What is the sum of all the integers between 0 and 100?
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## This note was uploaded on 11/10/2011 for the course PHYS 1301W taught by Professor Marshak during the Fall '08 term at Minnesota.

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Class 5 - 1 1-D Kinematics: Acceleration Physics 1301, Fall...

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