A train on a very long straight level stretch of tracks, starting from a dead stop, steadily speedsup to 28 m/s (about 63 mph) in 14 minutes, and then slows to 18 m/s (about 40 mph) with aconstant deceleration of magnitude 0.011 m/s 2. What was the average speed of the train forthis whole thing (speeding up and slowing down)? Hint: in this problem, if you take the direc-tion the train is going as positive, then average speed is the same thing as average velocity.

Case 1) initial speed = 0 msfinal speed (v) = 28 mstime taken (t) = 14 minutes = 14×60 seconds = 840…

A train on a very long straight level stretch of tracks, starting from a dead stop, steadily speeds up to 28 m/s (about 63 mph) in 14 minutes, and then slows to 18 m/s (about 40 mph) with a constant deceleration of magnitude 0.011 m/s ?. What was the average speed of the train for this whole thing (speeding up and slowing down)? Hint: in this problem, if you take the direc- tion the train is going as positive, then average speed is the same thing as average velocity.

A train on a very long straight level stretch of tracks, starting from a dead stop, steadily speeds up to 28 m/s (about 63 mph) in 14 minutes, and then slows to 18 m/s (about 40 mph) with a constant deceleration of magnitude 0.011 m/s ?. What was the average speed of the train for this whole thing (speeding up and slowing down)? Hint: in this problem, if you take the direc- tion the train is going as positive, then average speed is the same thing as average velocity.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 13P: A person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop....

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