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Newton's First Law Of Motion

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Alice Young

on 23 September 2013

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Transcript of Newton's First Law Of Motion

Newton's First Law of Motion
Definition- An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

An object in motion stays in motion and an object at rest stays in rest unless acted upon by an outside force.

Newton's First Law Of Motion
A spacecraft far from any source of gravity wouldn't need thrust to keep it moving at a constant speed in a given direction. Once set in motion, it will keep moving forever without impulse, since there is no friction in space to slow it down. But in order to change directions or speed, it will require an additional force of thrust.
A item in motion will stay in motion, and a item at rest will stay at rest unless acted upon by an external force.
The use of a seat belt in the car brings the passenger to the same state of motion with the car; if it accelerates, so does the passenger and if it decelerates, so does the passenger. If the car comes into a collision with a wall, the seat belt causes the passenger to stop abruptly with the car, and the passenger will decelerate with the car. However, if the passenger chooses not to use a seat belt and the car were brought to a collision, the passenger would no longer share the same state of motion as the car and is more likely to maintain its state of motion.
Newton's First Law Applied to Spaceships
Alice Young, Aileen Ramirez,
Cameron Walker, Henry Feng, Brendan Le
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