Calculate the net amount and distance, Mathematics

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1. A train on the Bay Area Rapid Transit system has the ability to accelerate to 80 miles/hour in half a minute.

A. Express the acceleration in miles per hour per minute.

B. Starting from rest, how fast does one of the trains move after 20 seconds?

2. An 1100-kilogram automobile loses speed at a rate of 0.5 meters/second per second. What is the net amount of work on the automobile as it moves a distance of 800 meters.

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