plz answer this... tomorrow is my exam... what are the three laws of Newton. explain in brief with example
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Newton's First Law of Motion
Newton's First Law of Motion states that an object in motion tends to stay in motion unless an external force acts upon it. Similarly, if the object is at rest, it will remain at rest unless an unbalanced force acts upon it. Newton's First Law of Motion is also known as the Law of Inertia.
If a ball is sitting on your table, it isn't going to start rolling or fall off the table unless a force acts upon it to cause it to do so. Moving objects don't change their direction unless a force causes them to move from their path.
Newton's Second Law of Motion
Newton's Second Law of Motion states that when a force acts on an object, it will cause the object to accelerate. The larger the mass of the object, the greater the force will need to be to cause it to accelerate. This Law may be written as force = mass x acceleration
For example, a ball rolling down a hill moves faster or accelerates as gravity acts on it in the same direction as the motion (acceleration is positive).
Newton's Third Law of Motion
Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.
For example, when you are standing on the ground, you are pushing down on the Earth with the same magnitude of force that it is pushing back up at you.