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Unformatted text preview: Essay 2: Bad Driving Decision By: Marc Z. Miskin October 27, 2009 1 Constant Velocity: Collision Imminent. If we want to know the velocity of the train with respect to the car, we need to take the car as a stationary object. Let's imagine riding in the car using this distinction. For de niteness, suppose the direction ahead of the car is the ydirection and the direction perpendicular to that sweeping from the driver's left to right side is the xdirection. We can visualize trees, sign posts, and other objects rooted in the Earth rushing towards the car at 40 m s and then receding into the distance. That is to say, relative to the car these objects are moving with a velocity of 40 m s in the ydirection. Likewise, if we were to see the train in the distance, it will appear to have a velocity containing both a leftright component and a coming towards us component. Since the two velocity directions, x and y, are perpendicular, we can de ne the train's velocity, mathematically as:→ v...
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 Fall '09
 D.Reid
 Acceleration, Car, Elwood

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