Abby's+Newton's+laws

=Abby's Newton's laws=

=Newton's first law= Newton's first laws states that every object will remain at rest or in uniform motion in a straight line unless compelled to change it's state by the action of an external force. The key point is that is if all the external forces cancel each other out, then the object will maintain a constant velocity. In this case the velocity will stay at zero, because the object is at rest. If an external force is added, the velocity will change, because of the force. The change in velocity is determined by the second force. How this affects an airplane is, the motion of an airplane when the pilot changes the throttle setting of the engine, which is described as Newton's first law.
 * What is Newton’s First Law?
 * How would Netwon’s First Law affect an airplane?
 * What is Newtons’ Second Law?
 * How would Newton’s Second Law affect an airplane?
 * What is Newtons’ Third Law
 * How does Newton’s Third Law help an airplane fly?
 * Which of the three Laws has the most to do with helping an airplane fly? Explain.



=Newton's second law= Newton's second law states that a force to be equal to the differential change in momentum per unit time. The momentum is defined to be the mass of an object times it's velocity. The key point is that a force will cause a change in velocity. A change in velocity will generate a force. How this affects an airplane is the motion resulting from aerodynamic forces and the airplane's weight and thrust can be computed by using the second law of motion.



=How does Newton's third law help an airplane fly?= Well to figure this question out we have to know what the third law is. Newton's third law states that for every action there is an equal and opposite re-action. This relates to an airplane flying because, an airplane lifts off the ground by speeding down a runnway and picking up speed and getting a lot of air. The air is deflected downward by the action of the airfoil, this reaction is very important because it helps explain the generation of lift from the airfoil. In this case the air is deflected downward by the action of the airfoil, in reaction pushing the wing upwards to make it fly. Try this, while your driving in your car open a window and put your hand outside making your fingers face the front ofthe car. While you drive, the air is coming toward your hand making it move upward like a plane would take off on the ground. The engine produces hot exhaust gases which flow out the back of the engine. In reation, a thrusting force is produced in the opposite direction, keeping the plane in the air.





=Which of the three laws has the most to do with helping an airplane fly?= I would say all of them help an airplane fly because, the first law, is when the airplane doesn't move untill it is ready to take off. The third law helps the airplane take off the ground by speeding down the runway. The second law helps the plane maintain it's velocity, the second law is in teh first and third law because the first law it is a t zero velocity untill the third law comes in and makes it go from zero to really fast or a really high velocity. They all work together to make an airplane fly.