If a moving ball runs into another, stationary one head-on, it can come to a dead halt.
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One head teacher said children with specific difficulties now concentrate more, read better, and their self-esteem has rocketed.
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One head teacher in Pembrokeshire described the conditions as "probably the worst" he had seen in 25 years.
Some children entering the education system in the UK do not even know their own name, according to one head teacher.
Some entered for personal fulfillment but many entered because they had to, because families could no longer survive on the income of one head of household.
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Thirty-five percent experienced what they considered to be a large drop in income, and 17 percent said at least one head of their household lost a job.
Marinating In Worry, Eat Pray Eat, The Thing With One Head and Chased By the Villagers look like the strongest contenders to keep her out of Palookaville.
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Such a set-up is an elegant way of coping with a national shortage at the top: one head and five deputies are easier to find than two of each.
Lakshmi Mittal, the wealthiest person in Britain, has a stake in the west London club, along with Formula One head Bernie Ecclestone and Renault team managing director Flavio Briatore.
One head teacher told him she was passionate about her work in a school in a deprived area but feared that it would be "career suicide" for her to remain there.
But he returned on Sunday morning to complete the round and carded five birdies against two bogeys to remain on course for victory, one head of Ryder Cup teammate Graeme McDowell.
According to one head teacher, students find any number of ways to smuggle them in - hidden in pens, in the folds of their uniform or in the pages of their notebooks.
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Union executive Paul Desgranges, from Sheffield, told the conference one head had told pupils at a school assembly that if they were behaving badly, it was because their teachers were "not reaching them".
Robert Boland, one of my colleagues at New York University, often says that of all the factors which go into the decision to hire one head coaching candidate over another, the one that matters significantly more than anything else is how well each candidate interviews with the owner.
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It's a foregone conclusion that Tamenaga's older son, Yoichi, will one day head the firm.
It's also sometimes called a headfish because it looks just like one big head.
CMOs should manage the revenue pipeline with an obsession comparable to the one the head of Sales has.
But one HR head who counsels unemployed men at our church said his best old advice was to stay networked.
With a one-head platform design and fewer mechanical parts, the reliability and acoustic features of the Spinpoint F4 have been improved.
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In fact, one corporate head has sent me a personal thank-you note for the policies that helped them to yield great profit.
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One typically head-snapping juxtaposition places a proto-Cubist Picasso painting of a head near a 16th-century French wood sculpture of the crucified Christ and those are just two objects among more than two dozen on that wall.
Although there has not been a female winner of the Arc since Zarkava in 2008, this year's field features a strong filly contingent, including the favorite Sarafina and the fancied Galikova -- trained, appropriately, by one Freddy Head.
One has hit me on the side of the head and one hit Chris Carruthers too.
One hedgehog got its head bitten off by a dog, one got eaten by a badger and another drowned.
In rare cases, players flip from playing for one organization to being a head coach for another in one off-season.
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From here, head one block northwest to the Secretaria de Educacion Publica (Education Secretariat).
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She planted one at the head of the grave and the other at the foot.
As a future king, William will one day be head of the armed forces.
Seven prisoners sneak through the wire one night and head south, toward Lake Baikal.
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