Mechanics Mastery

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NEB = An educational board in Nepal Physics = A subject dealing with the nature and properties of matter and energy Class 12 = A grade level in high school Asmita Publication = A publishing house known for educational books

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Create = Action Mechanics = Physics Chapter Asmita Publication = Publisher Class 12 = Educational Level

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NEB = Education System Physics = Science Mechanics = Physics Branch Asmita Publication = Book Publishing

What are the laws of motion according to Newton?

The laws of motion according to Newton are: 1. An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force (law of inertia). 2. The rate of change of momentum of an object is directly proportional to the applied force and takes place in the direction in which the force acts (law of force and acceleration). 3. For every action, there is an equal and opposite reaction (law of action and reaction). Signup and view all the answers

What is the difference between scalar and vector quantities?

Scalar quantities are those that have only magnitude, such as distance, speed, and temperature. Vector quantities are those that have both magnitude and direction, such as displacement, velocity, and force. Signup and view all the answers

What is the principle of conservation of momentum?

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces are acting on it. In other words, the total momentum before an event is equal to the total momentum after the event. Signup and view all the answers

Study Notes

Matching Elements and Descriptions

Match elements with descriptions: a process of linking items with their corresponding explanations or characteristics
Match items with categories: a process of grouping items into their respective classes or types
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Newton's Laws of Motion

Newton's First Law of Motion: an object at rest will remain at rest, and an object in motion will continue to move with a constant velocity, unless acted upon by an external force
Newton's Second Law of Motion: the force applied to an object is equal to the mass of the object multiplied by its acceleration
Newton's Third Law of Motion: for every action, there is an equal and opposite reaction

Scalar and Vector Quantities

Scalar quantities: physical quantities with only magnitude, but no direction (e.g., temperature, mass, time)
Vector quantities: physical quantities with both magnitude and direction (e.g., displacement, velocity, acceleration)

Conservation of Momentum

Principle of conservation of momentum: the total momentum of a closed system remains constant over time, as long as there is no external force acting on the system
Momentum: the product of an object's mass and velocity