# Newton 's Laws Of Motion Essay

1464 Words Sep 13th, 2015 6 Pages
NEWTON’S LAWS OF MOTION
Water rockets have used many times to test and explore the fundamental principles of physics. To understand what determines how far a water rocket may fly or how a rocket may even lift off, it is important to delve into the deeper detail; the forces acting in play. Newtons Laws govern the central principles regarding the physical forces which may act on a particular object in space. There are three laws which were developed by Sir Isaac Newton in 1686, when he published his book Principia Mathematica Philosophiae Naturalis (NASA, 2015).
Newton’s Law One states that ‘Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change to state by forces impressed on it’ (National Aeronautics and Space Administration, 2015). This law explains the concept of inertia which is ‘the resistance an object has to a change in its state of motion’ (The Physics Classroom, 2015). This law explains that something that is moving at a constant velocity will continue on its current path and speed until an opposing force stops the object. The same is applicable to an object which is at rest; it will remain at rest until an external force affects it.
Newton’s Law Two states ‘Force is equal to the change in momentum (mV) per change in time. For a constant mass, force equals mass times acceleration’ (National Aeronautics and Space Administration, 2015). Force in this rule refers to a push or pull force on an object which…

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