LOI III L'action est toujours égale et opposée à la réaction ; c'est-à-dire, que les actions de deux corps l'un sur l'autre sont toujours égales, et dans des directions contraires. — - Principe d’interaction - Énoncé Si A agit sur B avec une force (F_(A/B) ) ⃗ alors B agit sur A avec une force (F_(B/A) ) ⃗ tel que :

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PREMIÈRE LOI Tout corps persévère dans l’état de repos ou de mouvement uniforme et en ligne droite dans lequel il se trouve, à moins que quelque force n'agisse sur lui, et ne le contraigne à changer d'état.

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LOI II Les changements qui arrivent dans le mouvement sont proportionnels à la force motrice, et se font dans la ligne droite dans laquelle cette force a été imprimée.

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l’Énergie cinétique • C’est l’énergie liée à la vitesse • Définition :

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énoncé du théorème ∆Ec = Variation d’énergie cinétique ∆Ec = Ec final - Ec initiale

David Congiu

I never quite know if what I do will be understood.

Chris Raschka

Of course, the world is full of problems. But on the other hand it's important to get the sense... are we generally moving in the right direction or the wrong direction?

Bjorn Lomborg

At the time that I knew them, they were not living together. They began dating again after their divorce, so I didn't really see fighting.

Kato Kaelin

I always saw pollution as theft, and I always thought, 'Why should somebody be able to pollute the air, which belongs to all of us, or destroy a river or a waterway, which is supposed to belong to the whole community?'

Robert Kennedy, Jr.

As the Cold War melts into history our first concern should be the preservation and extension of human rights and democracy.

Sam Brownback

For infants and toddlers learning and living are the same thing. If they feel secure, treasured, loved, their own energy and curiosity will bring them new understanding and new skills.

Amy Laura Dombro

Eventually, my highbrow parents, who so hated the Eisenhower suburban culture of the 1950s that the only magazines they subscribed to were 'The Atlantic' and 'The New Yorker,' broke down and got 'Life' magazine.

Sally Mann

The individual who signs the check has the ultimate power.

Jerry Rubin

I'm limitless, spontaneous and fearless. I can take direction and also give it. And I don't dwell on celebrity.

Ester Dean

I saw my potential as artistic director, which is very different from designer. Fashion companies might have $200 million to $300 million in annual sales - Hugo Boss has 2.5 billion. I have to create a world that is believable and also relevant in 7,000 sales points around the world.

Jason Wu

I go eat a sandwich for lunch and have a milk shake and miss going to the gym for 10 days, and somebody snaps a picture of me on the beach, and all of a sudden, I've lost it. Why do I need to be perfect all the time?

Eric Dane

When you have a lot of money, there's so many places you can go to manage your money. But when you don't have money, mathematically you actually need a financial plan more. You can't really afford to make mistakes. So why is this such a luxury product?

Alexa Von Tobel

The fact that the Kardashians could be more popular than a show like 'Mad Men' is disgusting. It's a super disgusting part of our culture, but I still find it funny to make a joke about it.

Jonah Hill

These are classic, perennial ideals we are dealing with.

Rob Morrow

Next to filmmaking and stuff like that, skiing is my favorite thing. I go skiing in Aspen - everywhere. I have been skiing since I was 4. I just love it. I feel so free.

Sage Stallone

I have strange blood sugar levels. I get very odd if I don't eat. I either want to hit someone, cry, or fall asleep.

Alison Goldfrapp

I'm not really a guy who draws on things from my own past. I think if you're a competent actor with a good imagination, and if it's on the page, it makes your job a lot easier. If it's well written, it allows your imagination to run wild and draw inspiration from that.

Miguel Ferrer

People wonder if I'll always be a part of this family and the answer is yes. My family has a lot of good energy going in one direction and because of it, we get a lot of things done. That's why I'll always spend a lot of time at Camp Phoenix.

River Phoenix

'Il faut vivre' might almost be the French national motto from 1940 to June 1944, but who is to say ours would have been any different if the Germans had paraded victoriously through London and Generalfeldmarschall Von Runstedt made his headquarters at Claridge's?

Michael Korda

The most important thing is to understand that this career is not about speed. It's about stamina. This is a marathon. It's not a 50-meter sprint. You have to persevere and understand it takes a lot of time. You have to know you're going to knock on 100 doors and 99 of them are going to close in your face.

Jaime Camil

I hate to sound like a romantic adolescent, but I believe artists don't generally see art as a career choice; they simply can't overcome their desire to make art, and will live on little income for as long as they have to, before they start to sell their work - or give up and get a paying job.

Charles Saatchi

I'm very proud and happy to be serving the people of Arkansas and the Senate, and I look forward to continue to serve them.

Tom Cotton

I need to keep working on myself for a while.

Eminem

The contrasting focus on connection versus hierarchy also sheds light on innumerable adult conversations - and frustrations. Say a woman tells another about a personal problem and hears in response, 'I know how you feel' or 'the same thing happens to me.' The resulting 'troubles talk' reinforces the connection between them.

Deborah Tannen