# Chapter 2 Kinematics 9th Class physics English Medium

### Write the translatory motion and its types.

A cycle in which the body moves directly, without turning. The line may be straight or curved. For instance, car movement in a straight line. Transfer of electron across the core

### Types of translational motion

There are three types of translatory movement.
Linear motion
Circular motion
Random motion

### Linear motion

Linear flow is defined as movement of a straight line. The flux of free- falling bodies.

### Circular Motion

The movement of the body in a circle is known as circular motion. When you look at a stone tied to a rope, it moves in a circular motion. In the solar system, the earth revolves around the sun.

### Random Motion

A random or erratic movement of an object is called a random movement. For e.g The flight of insects and birds .

### Distance - Explain the time graph.

The terms distance and displacement are used interchangeably when the movement is in a straight line. In the same way, if the movement is in a straight line, speed and velocity are interchangeable terms.
In distance — The time graph represents distance covered by the object, while time is spent along the horizontal axis of the vertical axis.
Over time, the object is nonexistent. This is decent, and it should end there. It should end. Thus a horizontal line parallel to a distance of the time axis – the time chart indicates the object's speed is zero.

### Objects are moving at a constant speed

When an object's equal intervals include equal distances, its speed is said to be constant. Distance -The time graph, as displayed in the diagram, is a straight line. The object speed is given by its shield.

### Objects moving with variable speed

If an object doesn't cover equal distances at equal intervals of time, its speed is not constant. The diagram of distance time is not a straight line in this case, as seen in the figure. Everywhere is the curve pitch with its tangent pitch.

### Objects are moving at a constant speed

If an object's speed is time constant, then its speed. The time diagram is a time parallel horizontal line - the axis according to the statistics. In other words, the continuous motion of an object constitutes a straight line parallel to the time axis.

### What is kinematics?

The mechanical branch deals with the movement of objects without regard to their causing forces.