Question

Механические явления объясните это явление

Answer 1

Это ж элементарно!!!!!5 класс
механические - бежит человек, летит шарик, стираем ластиком

Как решать задачи:
Механическое движениеСкорость
Скорость (v) — физическая величина, численно равна пути (s), пройденного телом за единицу времени (t).

СИ: м/сПуть
Путь (s) — длина траектории, по которой двигалось тело, численно равен произведению скорости (v) тела на время (t) движения.

СИ: мВремя движения
Время движения (t) равно отношению пути (s), пройденного телом, к скорости (v) движения.

СИ: сСредняя скорость
Средняя скорость (vср) равна отношению суммы участков пути (s1+s2+s3…), пройденного телом, к промежутку времени (t1+t2+t3…), за который этот путь пройден.

СИ: м/с
Что именно надо?

Answer 2

Explanation of Mechanical Phenomena

Mechanical phenomena refer to physical events or processes that involve the motion, forces, and interactions of objects. These phenomena can be explained by various principles and laws of physics. Here, I will provide a brief explanation of some common mechanical phenomena.

1. Newton's Laws of Motion: One of the fundamental principles in mechanics is Newton's laws of motion. These laws describe the relationship between the motion of an object and the forces acting upon it. The three laws are as follows:

- First Law (Law of Inertia): 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. - Second Law (Law of Acceleration): The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This can be expressed as the equation F = ma, where F is the net force, m is the mass of the object, and a is the acceleration. - Third Law (Law of Action-Reaction): For every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another object, the second object exerts an equal and opposite force on the first object.

2. Friction: Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It arises due to the microscopic irregularities on the surfaces. Friction can be classified into two types: static friction (when there is no relative motion between the surfaces) and kinetic friction (when there is relative motion between the surfaces). Friction plays a crucial role in everyday life, affecting the movement of objects, the efficiency of machines, and more.

3. Elasticity: Elasticity is the property of a material to regain its original shape and size after being deformed by an external force. When a force is applied to an elastic material, it undergoes deformation, and upon the removal of the force, it returns to its original shape. This behavior is governed by Hooke's law, which states that the force required to deform an elastic material is directly proportional to the amount of deformation.

4. Simple Machines: Simple machines are mechanical devices that can change the magnitude or direction of a force to make work easier. Some examples of simple machines include levers, pulleys, inclined planes, wedges, screws, and wheels and axles. These machines utilize principles such as the conservation of energy and mechanical advantage to perform various tasks.

5. Fluid Mechanics: Fluid mechanics deals with the behavior of fluids (liquids and gases) and the forces acting on them. It encompasses concepts such as pressure, buoyancy, viscosity, and fluid flow. Fluid mechanics is essential in understanding phenomena like the movement of fluids in pipes, the behavior of gases in the atmosphere, and the operation of hydraulic systems.

These are just a few examples of mechanical phenomena. The field of mechanics is vast and encompasses many other concepts and principles. If you have any specific questions or would like more information on a particular topic, feel free to ask!