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smalltylynch
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What force is required to accelerate a 10g bullet from rest to 200m.-1 in a rifle barrel 50cm long
i don't need the answer just how to work it out
i don't need the answer just how to work it out
Newton's laws of motion are a set of three fundamental principles that describe the behavior of objects in motion. The first law states that an object will remain at rest or in motion at a constant velocity unless acted upon by an external force. The second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. The third law states that for every action, there is an equal and opposite reaction.
Newton's laws of motion can be observed in many everyday situations. For example, the first law can be seen when a car comes to a stop at a red light - it remains at rest until the driver applies the brakes. The second law can be seen when playing sports, as the force applied to a ball determines how far it will travel. The third law can be seen when walking - the ground pushes back with an equal and opposite force to the force of your feet pushing down.
Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. Mass is measured in kilograms, while weight is measured in newtons. On Earth, an object's mass and weight are typically proportional, but on different planets or in space, where gravity is different, an object's weight may change while its mass stays the same.
Yes, Newton's first law can be applied to non-moving objects. If an object is at rest and there is no net force acting on it, it will remain at rest. However, the second and third laws only apply to objects in motion or experiencing a change in motion.
Newton's laws of motion were groundbreaking in the field of physics and greatly contributed to our understanding of the universe. They provided a framework for understanding the motion of objects and laid the foundation for further scientific advancements, such as the development of calculus and the law of universal gravitation. Newton's laws also helped explain the motion of celestial bodies, paving the way for later discoveries in astronomy and cosmology.