Addition of Vectors (Triangle Rule) | Eduvigyan When two effects act together (like wind + river current), the final motion is not found by simple addition. We use vector addition to find the resultant (final speed and direction). Topic: Vectors • Core idea: Resultant of two vectors at an angle Boat–Wind–Current Story (Motivation) Imagine you […]
Addition of Vectors Read More »
We live in a three-dimensional world. So when an object moves, its direction can change in three independent ways: along x, along y, and along z. To handle such motion neatly, physics uses unit vectors and the resolution of vectors. Topic: Unit Vectors & Resolution of Vectors (3D) What is a Unit Vector? A unit
Unit vectors and Resolution of Vectors Read More »
When vectors interact, we learn how they are related in space. Vector multiplication allows us to extract hidden geometric and physical meaning— such as angles, projection, work done, rotation, and area. There are two fundamental ways to multiply vectors: Dot Product (scalar result) and Cross Product (vector result). Dot Product (Scalar Product) The dot product
Multiplication of Vectors (Dot & Cross Product) Read More »
Physics describes not only how much something happens, but also where and in which direction it happens. This lesson builds the foundation for motion, force, and the laws of mechanics. Topic: Basic Mechanics • Level: Class 9–12 / First-year Start With a Real-Life Example Imagine you tell a friend: “I walked 5 kilometers today.” That
You always noticed that in the world where you are living things tend to move around a lot and this fascinates us to study the science of motion. Motion is the phenomenon in which a body changes its position over time. Mathematically, you can describe the motion of a body in terms of distance, displacement,
Distance, Displacement, Average Speed, And Average Velocity Read More »
Instantaneous Speed It is the speed of a particle at any instant of time, . If is the distance traveled by the particle in a very small time, , then the instantaneous speed of the particle at that time is given by; That is, it is the rate of change of the distance with respect
Instantaneous Speed, Instantaneous Velocity, and Instantaneous Acceleration Read More »
Activity Suppose you have a gun in your hand and you are going to shoot at a big wooden block (as shown in the animation below). https://eduvigyan.com/wp-content/uploads/2022/03/Activity_eqn-of-kinematics_1_com.mp4 You notice that either the bullet comes out of the block or it fully stopped inside it. It means that the speed of the bullet is continuously decreasing
Equations of Kinematics for a Linear Motion Read More »
When a Golf player hits a Golf ball, a baseball player hits a baseball or a tennis player hits a tennis ball then you can notice that the motion of these balls are of the same kind and it is called a Projectile motion. What is Projectile Motion? When you throw an object at an
When you sit on a moving train and you are looking outside from the window of your train then you see that everything is speeding except your train. And if suddenly another train which is coming from the opposite direction crosses you then the velocity of another train appears to be quite larger than it
In 1687, Isaac Newton revolutionized scientific thinking by formulating the laws of motion and universal gravitation published in his book Principia. Today, more than 300 years later too, if we want to describe the effect of forces on any moving or non-moving things around us then we take the help of Newton’s Laws of Motion.
Newton’s Law Of Motion Read More »
