What is a Force - More Grades 3-5 Science on Harmony Square
This live-action video program defines force as an influence or action that is capable of changing the velocity of an object. The program introduces and describes acceleration, velocity and friction. Students will come to understand forces through footage, photographs, diagrams and colorful, animated graphics and labels. Related words are also used and reinforced with visuals and text.
A force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.
Concepts related to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the internal mechanical stress. Such internal mechanical stresses cause no acceleration of that body as the forces balance one another. Pressure, the distribution of many small forces applied over an area of a body, is a simple type of stress that if unbalanced can cause the body to accelerate. Stress usually causes deformation of solid materials, or flow in fluids.
Видео What is a Force - More Grades 3-5 Science on Harmony Square канала Harmony Square - Educational Videos & Activities
A force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.
Concepts related to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the internal mechanical stress. Such internal mechanical stresses cause no acceleration of that body as the forces balance one another. Pressure, the distribution of many small forces applied over an area of a body, is a simple type of stress that if unbalanced can cause the body to accelerate. Stress usually causes deformation of solid materials, or flow in fluids.
Видео What is a Force - More Grades 3-5 Science on Harmony Square канала Harmony Square - Educational Videos & Activities
Показать
Комментарии отсутствуют
Информация о видео
30 октября 2019 г. 3:22:36
00:03:25
Другие видео канала
![What Do Omnivores Eat - More Grades 5-8 Science on Harmony Square](https://i.ytimg.com/vi/1M8o0hCZYxU/default.jpg)
![Measurement and Control of Blood Pressure - More Science on the Learning Videos Channel](https://i.ytimg.com/vi/-t91NUSACF8/default.jpg)
![Impronta - Más grados 5-8 Ciencia en Harmony Square](https://i.ytimg.com/vi/uUgsr1Ta0x8/default.jpg)
![Trailer - Exploring Communities on the Learning Videos Channel](https://i.ytimg.com/vi/Aqq9zIyhvr4/default.jpg)
![What Is An Eating Disorder - - Let's Talk It Out](https://i.ytimg.com/vi/sYq_dicLPDk/default.jpg)
![What Do Omnivores Eat - More Science Vids for Kids on the Learning Videos Channel](https://i.ytimg.com/vi/-hzXi66OKvI/default.jpg)
![Consumers in the food chain. Fun science for kids on Harmony Square](https://i.ytimg.com/vi/hEg38GJ5IfQ/default.jpg)
![Endangered Species Revealed: Discover the World of Endangered Species!](https://i.ytimg.com/vi/IF55_74gPq0/default.jpg)
![What is Biochemistry - More Grades 9-12 Science on Harmony Square](https://i.ytimg.com/vi/kNjIBRjoclE/default.jpg)
![Chemical Spills and Splashes - More Lab Safety on the Learning Videos Channel](https://i.ytimg.com/vi/d1OW67Ym5sU/default.jpg)
![carnivore 6 12](https://i.ytimg.com/vi/J4EFvt8g4gM/default.jpg)
![What Is The Coronavirus II - Learn How To Stay Safe and Healthy | Science for Kids](https://i.ytimg.com/vi/2csvrUtr2IM/default.jpg)
![carnivoro 6 12](https://i.ytimg.com/vi/7Qkj6ufaTpM/default.jpg)
![How to Improve Your Mom's and Dad's Quality of Life - Positive Aging on the Learning Videos Channel](https://i.ytimg.com/vi/q0udSh5K0dA/default.jpg)
![Desert Habitats: Learn about the plants and animals that call the desert their home](https://i.ytimg.com/vi/Sskl9_KHeNs/default.jpg)
![Introduction Promo & Trailer - - More Science Fun in Bailey's Big Back Yard](https://i.ytimg.com/vi/LqVhyjOyM10/default.jpg)
![Amazing Mammals!](https://i.ytimg.com/vi/v_92JPzRRS4/default.jpg)
![Earthquake Preparedness - More Science on the Learning Videos Channel](https://i.ytimg.com/vi/ilopMFL7chI/default.jpg)
![Embryo - More Science on the Learning Videos Channel](https://i.ytimg.com/vi/S_qKVBgIVoY/default.jpg)
![What is Mass? - More Science on the Learning Videos Channel](https://i.ytimg.com/vi/C7vAYl2YNtU/default.jpg)