Class 7

# Class 7 - 2-D and 3-D Kinematics Physics 1301, Fall 2011:...

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1 2-D and 3-D Kinematics Physics 1301, Fall 2011: Class 7 Wednesday, September 19, 2011 Steve Robbins ([email protected]) is responsible for all errors in this Powerpoint

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Lecture on Dark Matter 2 Roger Blandford, Stanford University “The Dark Side of the Universe” McNamara Alumni Center, 7:00 pm Tuesday
3 Objectives: Wednesday, September 14 Train problem (Week 2 Homework) Kinematics of 2-d and 3-D Motion Projectile Motion Problems in Projectile Motion

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4 Demonstrations 1d15.20 High road, low road 1d15.30 Catching the train 1d15.41 Sliding weights on a triangle 1d60.10 Howitzer and tunnel 1d60.15 Howitzer and tunnel on incline
Train Problem (HW 2, Q 6) A passenger train is traveling at 29 m/s when the engineer sees a freight train 360 m ahead of his train traveling in the same direction on the same track. The freight train is moving at a speed of 6.0 m/s. ( a ) If the reaction time of the engineer is 0.40 s, what is the minimum (constant) rate at which the passenger train must lose speed if a collision is to be avoided? ( b

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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 7 - 2-D and 3-D Kinematics Physics 1301, Fall 2011:...

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