Question

example from your surroundings and explanation based on newton law of motion and mention which law.
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Answer 1

Newton's first law of motion states that an object at rest remains at rest and an object in motion remains in motion with the same velocity unless acted upon by what we call an unbalanced force. Let's break this law down by defining some key terms. Velocity is the speed of an object in a specified direction. An unbalanced force is an external force that changes the motion of an object. When an object is at rest or moving at a constant velocity, all the forces acting on it are balanced.

The external force of the hand will move the cup by creating unbalanced forces.

For example, my cup of coffee is resting on my kitchen table as I make this lesson. The force of gravity pulling down is balanced by the force of my kitchen table pushing up on my cup of coffee. Now, if I am to move my coffee, I must apply an external force to disrupt the balance. Thank goodness my muscles are strong enough to apply such a force so I can enjoy my cup of coffee. Ah, now that's good joe! Newton's first law of motion is also referred to as the law of inertia. Inertia is simply the resistance to change in motion. In short, objects tend to keep doing what they are already doing.

Answer 2

Heya user!

Here's the answer:

Example 1 : A cycle remains moving so long the force is applied on its pedal. If we stop pushing the pedal, the cycle stops. Similarly, if we put off the engine of a car, the car stops. The horse-cart stops after the horse stops moving and the boat stops after we stop pushing the oar.

•Law used- Newton's first law, i.e, "if a body is in a state of rest it will remain in the state of rest and if it is in the state of motion it will remain moving in the same direction with the same speed unless and external force is applied on it".


Example 2: When the glass vessels fall on a hard floor they break, but they do not break when they fall on a carpet (or sand) because when a glass vessels falls from a height on a hard floor it comes to the rest almost instantaneously (i.e., in a very short time) so the floor exerts a large force on the vessel and it breaks. But if it falls on a carpet (or sand),the time duration in which the vessel comes to rest, increases and so the carpet (or sand) exerts a less force on the vessel and it does not break.

•Law used- Newton's second law, i.e, "linear momentum of a body is the product of its mass and velocity".


Example 3: While moving on the ground, we exert a force by our feet to push the ground backwards, the ground exert a force of the same magnitude on our feet forward which makes us to move forward.

•Law used- Newton's third law, i.e, " to every action there is always an equal and opposite reaction".

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