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FAQs on Visual Worksheet: Newton's Laws of Motion - Physics Class 11 - NEET

1. What are Newton's three laws of motion?
Ans.Newton's three laws of motion are: 1. The first law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. 2. The second law states that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass (F = ma). 3. 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 can be observed in daily activities, such as driving a car (first law), where seatbelts are essential to counteract inertia during sudden stops. In sports, like basketball, the second law helps to understand how applying more force can increase the speed of a ball. The third law is evident when jumping off a diving board, where pushing down results in the board pushing you up.
3. What is the significance of the second law of motion in physics?
Ans.The significance of the second law of motion lies in its ability to quantitatively describe how the force acting on an object results in its acceleration. This law allows scientists and engineers to calculate how much force is needed to move objects of varying mass, which is essential in fields like engineering, aerospace, and automotive design.
4. Can you provide an example that illustrates Newton's third law of motion?
Ans.An example of Newton's third law of motion is when you sit in a chair. Your body exerts a downward force on the chair due to gravity, and in response, the chair exerts an equal and opposite force upward. This interaction keeps you stationary in the chair, demonstrating the principle that forces come in pairs.
5. How do Newton's laws of motion relate to momentum?
Ans.Newton's laws of motion are foundational to the concept of momentum, which is defined as the product of an object's mass and velocity (p = mv). The first law implies that an object's momentum remains constant unless acted upon by an external force, while the second law helps explain how the momentum of an object changes when a net force is applied. This relationship is crucial in understanding collisions and conservation of momentum in physical systems.
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