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Problems: Newton's laws - 2 Video Lecture | Crash Course for IIT JAM Physics

FAQs on Problems: Newton's laws - 2 Video Lecture - Crash Course for IIT JAM Physics

1. What are Newton's laws of motion?

Ans. Newton's laws of motion are three fundamental principles that describe the motion of objects. The first law states that an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity unless acted upon by an external force. The second law states that the force acting on an object is equal to its mass multiplied by its acceleration. The third law states that for every action, there is an equal and opposite reaction.

2. How do Newton's laws of motion apply to everyday life?

Ans. Newton's laws of motion have various applications in our everyday lives. For example, the first law explains why objects tend to stay at rest or continue moving in a straight line unless acted upon by an external force. The second law helps us understand how forces affect the motion of objects, such as when pushing a car or throwing a ball. The third law explains why we can feel a recoil when firing a gun or experience a backward push when swimming.

3. What is the relationship between force, mass, and acceleration according to Newton's second law?

Ans. According to Newton's second law of motion, the force acting on an object is directly proportional to its mass and acceleration. This relationship is expressed by the equation F = ma, where F represents the force, m represents the mass of the object, and a represents its acceleration. In simpler terms, the greater the force applied to an object or the greater its mass, the greater the resulting acceleration will be.

4. Can you provide an example of Newton's third law of motion?

Ans. An example of Newton's third law of motion is the recoil experienced when firing a gun. When the gun is fired, the bullet is propelled forward with a certain force. Simultaneously, an equal and opposite force is applied to the gun, causing it to recoil backward. This is because the force exerted by the expanding gases on the bullet and the force exerted by the bullet on the gases are equal in magnitude but opposite in direction, as dictated by Newton's third law.

5. How do Newton's laws of motion relate to car accidents?

Ans. Newton's laws of motion play a crucial role in understanding car accidents. The first law explains why passengers tend to continue moving forward even after a car comes to a sudden stop. This is due to their inertia, which resists changes in motion. The second law helps us understand the relationship between forces, acceleration, and mass involved in collisions. The third law explains the equal and opposite forces acting on two colliding vehicles, contributing to the overall impact and damage during an accident.

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Sep 21, 2025 Last updated

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