Question

5. Хлопчик ковзає з гірки. Оберіть варіант, де перелічені всі сили, що діють на хлопчика: А. Сила тяжіння, сила пружності, сила тертя Б. Вага, сила пружності, сила тертя В. Сила тяжіння, вага, сила тертя г. Сила тяжіння, сила тертя

Answer 1

В, адже Сила тяжіння діє на нас постійно, вага, сила тертя, коли доторкаємося до поверхні

Answer 2

Ответ:

а

Объяснение:

сила трения вниз

упругости Перпендикулярно поверхности

Трения противоположна движению

Answer 3

Forces Acting on the Boy Going Down the Slide

When a boy is sliding down a hill, several forces act on him. Let's analyze the options provided and determine which forces are acting on the boy:

A. Gravity, elastic force, friction B. Weight, elastic force, friction C. Gravity, weight, friction D. Gravity, friction

To determine the correct answer, we need to understand the forces involved:

1. Gravity: Gravity is the force that pulls objects towards the center of the Earth. It acts vertically downward and is always present. The force of gravity depends on the mass of the object. In this case, gravity is acting on the boy and pulling him downward.

2. Weight: Weight is the force exerted by an object due to gravity. It is equal to the mass of the object multiplied by the acceleration due to gravity. Weight is a type of force and is proportional to the mass of the object. In this case, the weight of the boy is acting downward.

3. Elastic force: Elastic force is the force exerted by a stretched or compressed object, such as a spring. It acts in the opposite direction to the deformation and tries to restore the object to its original shape. In the context of a boy sliding down a hill, it is unlikely that there is any significant elastic force acting on him.

4. Friction: Friction is the force that opposes the motion of an object when it comes into contact with another surface. It acts parallel to the surface and in the opposite direction to the motion. When the boy is sliding down the hill, there will be friction between his body and the surface of the slide. Friction acts to slow down the boy's motion.

Based on the above analysis, the correct answer is C. Gravity, weight, and friction. These three forces are the most relevant and significant forces acting on the boy as he slides down the hill.

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