I was a bit late photographing the little dodgers though ... So these two birds, each 12 cm long, are flying towards each other, both at a stately 2m/sec. Then their two beak-tips are in line with each other, and a very short time later their two tail-tips are in line ... then they continue on their separate ways. For a brief few moments, they overlapped. And now, of course, some questions .... [a] One of them was called Bob. What was the other one called ? [b] What sort of bird were they ? [c] What was their mean velocity? Well ...that wasn't too bad was it ? No. But just in case you don't know, the answers will appear after the music. No peeking now ! Anyway, maybe they were just in my imagination .... There was a game we used to play
We would hit the town on Friday night And stay in bed until Sunday We used to be so free We were living for the love we had and Living not for reality It was just my imagination [x3] There was a time I used to pray I have always kept my faith in love It's the greatest thing from the man above The game I used to play I've always put my cards upon the table Let it never be said that I'd be unstable It was just my imagination [x3] There is a game I like to play I like to hit the town on Friday night And stay in bed until Sunday We'll always be this free We will be living for the love we have Living not for reality It's not my imagination [x3] Not my [x18] So ...those vital answers .... [a] The other one was called boB. Because he was going in the opposite direction to Bob. Obvious eh ! [b] What sort of bird were they ? Passerines of course. Easy-peasy Passerines gets full marks as well. [c] Well ,their mean velocity was zero.They were going in opposite directions. Doh !! Velocity, unlike the rather vague "speed", is vector quantity, not a scalar. As we all know, well, those of you who went to school anyway, there's another BIG question ... a question that always gets asked in that situation. But I haven't asked it ! I've set it up ..... but at the vital moment I backed out of actually writing it. If you want to do it anyway, by all means feel free to do so. And if not, then don't .... just let it pass by.
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AuthorThat's the author up there ... I was young and sprightly then. Archives
October 2022
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