In this post, we will make a comparison between Vertical projectiles and Horizontal projectiles. When an object is thrown or projected, into the air it’s named a projectile. Essentially, such a projectile (rock, football, bullet, golf ball, or whatever) could be directed straight upward as a vertical projection, directed straight out as a horizontal projection, […]

# Motion

## Multiple Choice Questions on Motion physics (MCQs on motion)

Motion in one dimension – Multiple Choice Questions (MCQ):In this post, we are presenting an awesome set of MCQs on Motion in one dimension. These multiple-choice questions will make you confident enough about this chapter, provided you try this MCQ paper to test your understanding. We found this set on the internet and thought to […]

## Instantaneous Acceleration – definition & formula with solved problem

The quantity that tells us the rate at which an object is changing its velocity at a specific instant in time anywhere along its path is the instantaneous acceleration. That means when we say ‘acceleration’ of a body we actually mean instantaneous acceleration. Another related term is the average acceleration that is basically for a […]

## Average Acceleration and its formula & solved numerical problems

When velocity changes an object is said to undergo acceleration. Quantitatively, we define acceleration as the rate of change of velocity, just as we defined velocity as the rate of change of position. The average acceleration over a time interval Δt is the ratio of change in velocity Δv (that takes place over the time […]

## Physics Calculator for Projectile Motion equations – online

Why Online Physics Calculator for Projectile Motion? This post presents you with a set of Projectile motion online calculators to calculate parameters like maximum height, maximum horizontal range, time for upward motion, the total time of flight, etc. If you use these calculators, you can easily and quickly find out how certain input parameters can […]

## Instantaneous Velocity – definition & equation with solved problem

The quantity that tells us how fast an object is moving at a specific instant in time anywhere along its path is the instantaneous velocity, usually called velocity as well. That means when we say ‘velocity’ of a body we actually mean instantaneous velocity. Another related term is the average velocity that is basically for […]

## Average velocity – definition, formula, numerical problem

How fast an object is moving can be expressed by the rate at which the position of the object changes with time. For each position xi, we assign a particular time ti. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity v. Average […]

## Force and Laws of Motion Class 9 Numericals

This page presents a few sets of force and laws of motion class 9 numericals. We have used linear motion equations and force equations to solve these numerical problems. [detailed solution of the numerical questions is given at the end of this page] Force and Laws of Motion Class 9 Numericals Set – 1 [solution […]

## Numerical problems on Vertical motion

In this post we will solve harder numerical problems on Vertical motion physics. vertical motion is an interesting chapter in mechanics . Here you get selected problems to solve which will help you to test your understanding.

## NCERT Solution of Laws of Motion problems – class 11 physics

NCERT solutions for class 11 physics chapter 5 laws of motion – This chapter covers selected problems from the chapter laws of motion. Here we are solving selected problems both from the Exemplar and NCERT Physics textbook. If any problem needs some coverage of fundamentals we are catering that also. We are giving the reference […]

## Solution of Physics Numericals for class 9 (set 1 Q16)

Problem Statement A bullet of mass 50 g moving with an initial velocity of 100 m/s, strikes a wooden block and comes to rest after penetrating a distance 2 cm in it. Calculate: (i) Initial momentum of the bullet (ii)final momentum of the bullet (iii) retardation caused by the wooden block, and (iv) resistive force […]

## Solution of Physics Numericals for class 9 (set 1 Q15)

Problem statement A force causes an acceleration of 10 m/s^2 in a body of mass 500 g. What acceleration would be caused by the same force in a body of mass 5 kg. Solution Case 1 mass = m=500 g = 0.5 kg Acceleration = a =10 m/s^2 Force = ma = 0.5 . 10 […]

## Solution of Physics Numericals for class 9 (set 1 Q14)

Problem Statement A body of mass 500 g, initially at rest, is acted upon by a force which causes it to move a distance of 4 m in 2 sec. Calculate the force applied. Solution: mass=m = 500 g = 0.5 kg Initial velocity = u = 0 Distance travelled = s=4 m Time duration […]

## Solution of Physics Numericals for class 9 (set 1 Q13)

Problem Statement A cricket ball of mass 100 g moving at a speed of 30 m/s is brought to rest by a player in 0.03 s. find the average force applied by the player. Solution: mass =m= 100 g = 100/1000 kg = 0.1 kg initial velocity = u=30 m/s Final velocity = v=0 Time […]

## Solution of Physics Numericals for class 9 (set 1 Q12)

Problem Statement A force acts for 0.1 sec on a body of mass 2 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m/s. Find the magnitude of the force. Solution of class 9 Set1 Q12 Solution: A force acts on a body for 0.1 sec. […]

## Solution of Physics Numericals for class 9 (set 1 Q11)

Problem Statement A force acts for 10 s on a stationary body of mass 100 kg after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate (i) the velocity acquired by the body, (ii) the acceleration produced by the force, and (iii) the […]

## Physics Numericals class 9 (CBSE/ICSE)–problem set2

Here we present another set of physics numerical for class 9. You can also get the solutions for this set of physics numerical for class 9. The Links to the solution are given beside the problems. You can try first try and then check the solutions. Or you can also directly refer to the solutions […]

## Velocity time graph – comprehensive Guide

The velocity-time graph is defined as a graphical representation of the velocity of a body in motion with respect to time. Generally, velocity is assigned to the y-axis, and time is pointed on the x-axis. This graph type is also written as a v-t graph or velocity-time graph. The diagram below depicts a few velocity-time […]

## Physics Numerical Class 9 Motion & 101+ Questions & answers from various chapters

This page covering Physics Numerical class 9 Motion (questions & answer sets) consists of 106 numerical questions, solutions, and answers from Motion Physics (kinematics), and from other topics and chapters as per CBSE & ICSE syllabus for class 9 physics. This superset of physics questions includes 3 worksheets to solve [links given at the end of this post] as well.

## Contact Forces between blocks – Application of Newton’s laws

Application of newton’s laws: Newton’s laws of motion give us concepts of force (first law), measurement of force with its equation (second law), and the reaction of force (3rd law). Today we will discuss an interesting topic of mechanics – the application of Newton’s laws. It will cover a few interesting applications of Newton’s Laws […]

## Projectile motion Derivation of equations for class 11 | Parabolic trajectory, Maximum height, flight time, Horizontal Range

We will discuss how to derive Projectile Motion Equations or formula and find out how the motion path or trajectory looks like a parabola under the influence of both horizontal and vertical components of the projectile velocity. We will also find out how to find out the maximum height, time to reach the maximum height, the total time of flight, horizontal range, & maximum horizontal range traversed by a projectile.

how to find out the maximum height, time to reach the maximum height, the total time of flight, horizontal range, & maximum horizontal range

## Momentum – Definition, Meaning, and Formula

In this post, we will cover the definition and formula of Momentum (Linear Momentum). We will also discuss what it actually means in physics. Momentum Definition | Linear Momentum By Momentum, we mean inertia in motion. More specifically, Linear Momentum or Momentum is defined as the product of the mass and velocity of an object. […]

## Variation of g with height and depth – how g changes with height and depth

Variation of g with height and depth: Acceleration due to gravity or g varies as the height or depth varies with respect to the surface of the earth. This means the value of g on top of a mountain won’t be exactly the same as that on the earth’s surface. Similarly, g at a location […]

## What is the difference between Instantaneous Speed and Instantaneous Velocity?

What is the difference between instantaneous speed and instantaneous velocity? The instantaneous velocity is the ratio of displacement and the time duration provided the time duration is very small (Infinitesimal with time duration approaching zero).Instantaneous speed is the magnitude of instantaneous velocity and so can never be negative. Instantaneous speed measures how fast a particle […]

## Vertical motion when a ball is thrown vertically upward with derivation of equations

when a ball is thrown vertically upwards it goes up for a while and then stops and starts to come down and touches the ground. Maximum height reached, velocity at the highest point, time for upward and downward movements, velocity before touching the ground- find all these mathematically

## Newton’s First Law of Motion doesn’t hold good for every frame of reference

The frame of reference and Newton’s first law of motion – This law says that if the sum of all the forces acting on a particle is zero then a static particle continues to remain at rest and a moving one continues moving with a constant velocity along a straight line. That means if no […]

## Pushing a car, Newton’s 3rd Law and Friction

Hope you have seen people pushing their car when it’s not starting due to some issue. When someone is pushing a car or something like that, he first pushes the ground or floor obliquely backwards with his feet. Following the ‘3rd law of Newton‘ the ground also exerts an equal and opposite force obliquely on […]

## Freefall in physics

In this post, we will find out (a) how to find the weight of a freely falling body (b) How the velocity of a freely falling body changes every second if we ignore air drag force (air resistance)? (c) Why do we feel weightless during freefall (d) Kinetic energy of a body under free fall (e) Applicability of Law of conservation of energy for free fall (e) how distance traveled per second varies