On the other hand if we pull an object, then the vertical component acts in the upward direction, reducing the force of friction. So, **when there will be less force of friction, it is easier in that case to move the body**. Hence, it is easier to pull than to push a body.

On the other hand if we pull an object, then the vertical component acts in the upward direction, reducing the force of friction. So, **when there will be less force of friction, it is easier in that case to move the body**. Hence, it is easier to pull than to push a body.

Basically what I mean is **1D motion is along straight line, 2D motion is movement on a plane and 3D motion is movement in space**.

If an object changes its position with respect to its surroundings with time, then it is called in motion. It is a change in the position of an object over time. Motion in a straight line is nothing but **linear motion**.

Two-dimensional (2D) motion means **motion that takes place in two different directions (or coordinates) at the same time**. The simplest motion would be an object moving linearly in one dimension. An example of linear movement would be a car moving along a straight road or a ball thrown straight up from the ground.

An object is in motion **if it changes position relative to a reference point**. Objects that are fixed relative to Earth – such as a building, a tree, or a sign - make good reference points.

MOTION IN ONE DIMENSION IS **MOTION ALONG A STRAIGHT LINE LIKE THAT OF A CAR ON A STRAIGHT ROAD**. THIS DRIVER ENCOUNTERS STOPLIGHTS AND DIFFERENT SPEED LIMITS ON HER COMMUTE ALONG A STRAIGHT HIGHWAY TO SCHOOL.

A body is said to be in a state of motion **when it is moving or equivalently its position continuously changes with respect to time**.

Permutations are used in almost every branch of mathematics, and in many other fields of science. **In computer science, they are used for analyzing sorting algorithms; in quantum physics, for describing states of particles; and in biology, for describing RNA sequences**.

permutations and combinations, **the various ways in which objects from a set may be selected, generally without replacement, to form subsets**. This selection of subsets is called a permutation when the order of selection is a factor, a combination when order is not a factor.

A permutation is **a rearrangement of members of a sequence into a new sequence**. For example, there are 24 permutations of . Some of them are , and .

The **4** major order of operations are: Parentheses. An exponential term. Multiplication or division.

The number of ways of arranging the objects or the number of permutations of n objects taken r number of objects at a time is given by: nPr = n!/(n – r)! Here, **n represents the total number of objects or elements of the set and r represents the number of objects taken for permutations**.

…how to perform the four arithmetic operations of **addition, subtraction, multiplication, and division**.

A permutation is **a mathematical technique that determines the number of possible arrangements in a set when the order of the arrangements matters**.

Dated : 08-Jul-2022

Category : Education