In view of the coronavirus pandemic, we are making LIVE CLASSES and VIDEO CLASSES completely FREE to prevent interruption in studies
Physics > Motion > Introduction to Motion and Its Parameters
Motion

Introduction to Motion and Its Parameters

Confused between scalar and vector? What is the difference between distance and displacement? How are speed and velocity different from each other? This seemingly easy terms always confuse us. Before we jump right into the technicalities of motion, here are some basic parameters of motion that will help you understand the topic well!

Suggested Videos

Play
Play
Arrow
Arrow
ArrowArrow
VST Kinematics Problem 35 and its Solution
Speed
Slider

Motion

Parameters of Motion

The change in the position of the object with respect to time is called the motion of that object. The change in motion is based on the reference point of an individual. Let’s take an example of the 2 cars (A and B) moving at a constant speed that you observe from your school window.

Parameters of Motion

From your reference point, the cars are in motion because they are constantly moving. Although, from the reference point of the car A, car B is not in motion since it has the same speed as car A. But you on the other hand, for car A, will be in motion because of the constant change in your position from the reference point of car A

Parameters of Motion

Scalar Quantity

These quantities only have a magnitude(size) and no directions. Examples of such quantities are speed, mass, distance, volume and many others.

Browse more Topics under Motion

Vector Quantity

These quantities have both magnitude and direction. So change in any one of the two will change the value of the vector quantities. Examples of vector quantities are velocity, acceleration, force, displacement and many more.

Distance

The length of the total path travelled by the body is the distance travelled by the body. It is the scalar quantity. Mostly measured in m(meters).

Displacement

The length of the shortest path travelled by the body from point A to B is the displacement. It is the scalar quantity. Mostly measured in m(meters).

Speed

The distance travelled by the body per unit time is the speed of the body. It is a scalar quantity. Speed is given by the formula, speed=distance/time, Measured in m/s.

Uniform speed

If a body travels equal distance at equal intervals of time, the body is said to be moving at a uniform speed.

Non-Uniform speed

If the speed of the body keeps changing throughout the body is said to be moving at a non-uniform speed. The average speed of the body= total distance travelled/total time taken to travel the distance.

Velocity

The displacement of a body from point A to B per unit time is the velocity. It is a vector quantity, which means it has both magnitude and direction. Velocity is given by the formula, Velocity=displacement/time, Measured in m/s.

Uniform velocity

If a body travels equal distance at equal intervals of time in a straight line the body is said to be moving at a uniform velocity.

Non-Uniform Velocity

If a body travels unequal distance at equal intervals of time in a straight line the body is said to be moving at a non-uniform velocity. The average velocity = total displacement/total time taken.

Acceleration

If a body changes its velocity with time, it is said to be accelerated. Acceleration is defined as the rate of change of velocity with respect to time. Its unit is m/s2.

You can download Motion Cheat Sheet by clicking on the download button below


Introduction to Motion

Solved Examples on Parameters of Motion

Question: Unit of acceleration is

  1. m/s
  2. ms
  3. m/s2
  4. none of these

Solution: Option C. Acceleration = dv/dt. Unit of ‘v’ is m/s and ‘t’ is s. Therefore, the unit of acceleration is m/s2.

Share with friends

Customize your course in 30 seconds

Which class are you in?
5th
6th
7th
8th
9th
10th
11th
12th
Get ready for all-new Live Classes!
Now learn Live with India's best teachers. Join courses with the best schedule and enjoy fun and interactive classes.
tutor
tutor
Ashhar Firdausi
IIT Roorkee
Biology
tutor
tutor
Dr. Nazma Shaik
VTU
Chemistry
tutor
tutor
Gaurav Tiwari
APJAKTU
Physics
Get Started

Leave a Reply

avatar
  Subscribe  
Notify of

Stuck with a

Question Mark?

Have a doubt at 3 am? Our experts are available 24x7. Connect with a tutor instantly and get your concepts cleared in less than 3 steps.
toppr Code

chance to win a

study tour
to ISRO

Download the App

Watch lectures, practise questions and take tests on the go.

Get Question Papers of Last 10 Years

Which class are you in?
No thanks.