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Newton’s First Law Of Motion | Practical Applications | CBSE Class 9 Science | Physics
Hello students, here in this video we are going to learn a very interesting & important topic as, Newton’s First Law of motion and its a practical application from chapter Force and Newton’s Laws of Motion of CBSE Class 9 Science physics.
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First, we understand Newton’s First Law.
Newton’s First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion.
Applications of Newton’s First Law:
1. When a tree is shaken, it moves to and fro. But fruit remains at rest due to its inertia of rest. Due to this fruit breaks off the tree.
2. When we hit a carpet it loses inertia of rest and moves. But the dust in it retains inertia of rest and is left behind. Thus dust and carpet are separated.
3. When a car is braked suddenly, the man bends forward violently due to the inertia of motion. The man may collide with parts of car hurting himself. The seat belt will not let the man bend forward. And thus save them from the accident.
4. Due to the inertia of motion even when the car stops, the luggage on the top of the car has the tendency to move forward. Therefore luggage is tied.
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