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Answers to Worksheet 4.1 Question: For a 180 mm lens, the length of the camera footprint is about 30 miles. Suppose you took a photo at MET 00/22:15:20. If you wanted to take a second picture that began where the first ended: [[diagram]] How many seconds later should you take the 2nd picture? 6 seconds At what MET would that be? 00/22:15:26 Question: For the 50 mm lens, the length of the footprint of the camera is about 100 miles. Suppose you took a photo at MET 01/00:07:10. If you wanted to take a second picture that began where the first ended: [[diagram]] How many seconds later should you take the 2nd picture? 20 seconds At what MET would that be? 01/00:07:30 09/19/96 Page 4.12