# Kinematics_21

## Centripetal Force Calculator

Here, on this page, you can use a web-based Centripetal Force Calculator based on the centripetal force formula. Centripetal Force Calculator Mass (kg): Velocity (m/s): Radius (m): Centripetal Force (N): Calculate Reset How to use the calculator? – You have to provide values for any 3 parameters out of 4 parameters (mass, velocity, radius, and […]

## Average Velocity Calculator (using Initial and Final Velocity)

Here, on this page, you can use a web-based Average Velocity Calculator based on initial and final velocities. We have another Average Velocity calculator based on displacement. Average Velocity Calculator (Initial and Final Velocity) Initial Velocity (m/s): Final Velocity (m/s): Average Velocity (m/s): Calculate Reset How to use the calculator? – You have to provide […]

## Average Velocity Calculator – using Displacement

Here, on this page, you can use a web-based Average Velocity Calculator. This calculator uses displacement as one of its parameters. Average Velocity Calculator (Displacement based) Displacement (m): Total Time (s): Average Velocity (m/s): Calculate Let’s see how to use this calculator. – You have to provide values for any 2 parameters out of 3 […]

## Average Acceleration Calculator

Here, on this page, you can use a web-based Average Acceleration Calculator. Average Acceleration Calculator Initial Velocity (m/s): Final Velocity (m/s): Time Duration (s): Average Acceleration (m/s²): Calculate Let’s see how to use this Calculator. – You have to provide values for any 3 parameters out of 4 parameters (initial velocity, final velocity, time duration, […]

## Uniform Motion | Uniform Linear Motion

Uniform motion or Uniform Linear Motion means motion with a constant or uniform velocity (constant magnitude and constant direction). As a one-dimensional example of this, the car in Figure 1 has a uniform velocity. – It travels the same distance in the same direction and experiences the same displacement in equal time intervals (50 km […]

## Numericals on distance and displacement class 9

In this post, let’s solve a set of Numericals on distance and displacement for class 9.

## Acceleration Numericals Class 9

In this post, we will solve a set of numerical problems based on the acceleration formula and concept (for class 9 students).

## Derive the relation between Angular Velocity and Linear Velocity

Derive the relation between Angular Velocity and Linear Velocity

## Derive the relation between Linear displacement and Angular displacement

Derive the relation between Linear displacement and Angular Displacement

## Examples of Inertia

In this post, we will list a set of examples of Inertia (in fact, for all 3 types of inertia) for class 9 students.

## You throw an object straight up such that it leaves your hand with a speed of 9.7 m s−1. how long after you let it go does the ball reach its maximum height?

Question: You throw an object straight up such that it leaves your hand with a speed of 9.7 m s−1. how long after you let it go does the ball reach its maximum height?

## Approximately how fast must you toss a ball straight up in order for it to take 2 seconds to return to the level from which you tossed it?

Approximately how fast must you toss a ball straight up in order for it to take 2 seconds to return to the level from which you tossed it?

## Velocity and acceleration of a ball thrown upwards

Velocity and acceleration of a ball thrown upwards

## An object is thrown vertically upward and returns after 10 seconds. Find the initial velocity and its maximum height.

An object is thrown vertically upward and returns after 10 seconds. Find the initial velocity and its maximum height.

## A ball thrown vertically upward from a roof 60 m above the ground. The ball rises, then falls to the ground. The initial velocity of the ball is 23.4 m/s. At t=2.39 s, what is the velocity of the ball?

A ball thrown vertically upward from a roof 60 m above the ground. The ball rises, then falls to the ground. The initial velocity of the ball is 23.4 m/s. At t=2.39 s, what is the velocity of the ball? answer: zero

## What is the acceleration of the ball at its maximum height?

Question: What is the acceleration of the ball at its maximum height? [When a ball is thrown vertically upward]

## A ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height?

a ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height?

## A ball is thrown vertically upward its velocity at the highest point is

A ball is thrown vertically upward its velocity at the highest point is

## How to find the maximum height of a ball thrown up?

Let’s see how to find the maximum height of a ball thrown up vertically. We will use one of the motion equations and g as the acceleration.

## Prove that projectile motion is parabolic class 11

Here we will Prove that projectile motion is parabolic (class 11). To do this we need to derive the Projectile Motion Path Equation (or Projectile trajectory equation) first.

## Time of flight equation for projectile

Time of flight equation for projectile qith derivation

## What is Projectile Motion?

A projectile is an object in flight after being projected or thrown and this motion is called Projectile Motion. For example, the motions of a cricket ball, or baseball.

## Maximum height of Projectile formula

In this post, we will focus on the formula to find the maximum height traversed by a projectile. Then we will derive this as well.

## Projectile Motion Formula class 11

This post on Projectile Motion Formula for class 11 presents a set of formulas that describe a projectile motion that is parabolic in nature and helps to find out important motion parameters as well. Let’s find out those formulas one by one, along with a brief idea for each formula.

## Equation of Trajectory of a Projectile

The equation of the trajectory of a projectile shows that this trajectory path represents a parabola. This means that a projectile follows a parabolic path.

## Range of Projectile formula

The range (Horizontal Range) of a projectile is defined as the horizontal distance between the point it touches the ground and the point of projection. Now, let’s find the Range of the Projectile formula.

## Projectile Motion Equations

Here, is a list of projectile motion equations. This list includes the equation of projectile motion path, and other important equations like time to reach maximum height, maximum height, horizontal range, max horizontal range, displacement, etc.

## What is Free Fall Class 9

What is free fall class 9 – The falling of an object from a height towards the earth under the gravitational force of the earth (with no other forces acting on it) is called free fall. And such an object is called a freely falling body (or ‘freely falling object’). So, whenever a body (or object) falls towards the earth on its own, we say that it is under free fall or that it is a freely falling body (or freely falling object).

## Inertia class 9

In this post, we will briefly cover the topic of inertia for class 9 students. We will define, classify, and present examples of each type of inertia. We will also see how mass relates to inertia.

## Non-uniform acceleration on a velocity-time graph

If the acceleration is changing, the gradient of the velocity-time graph will also be changing – so you won’t get a straight line. Increasing acceleration is shown by an increasing gradient — like in curve 1 below. Decreasing acceleration is shown by a decreasing gradient – like in curve 2 below. How to find the […]

## The velocity-time graph & speed-time graph – comparison

Here, we will find the differences between the velocity-time graph & speed-time graph. As an example, we will compare the velocity-time and the speed-time graphs for a ball being thrown up into the air. Differences between the velocity-time graph & speed-time graph A speed-time graph may have some similarities with a velocity-time graph, but these […]

## How to determine Acceleration on displacement-time graphs

In this post, we will see how to determine the acceleration from a displacement-time graph. The gradient of a displacement-time graph shows velocity. Acceleration is the rate of change of velocity, so on a displacement-time graph, acceleration is the rate of change of the gradient. A graph of displacement against time for an accelerating object […]

## Displacement-Time Graphs

Displacement-time graphs show an object’s position relative to its starting point over a period of time. They’re useful because they can be used to describe an object’s motion as well as find its velocity at a given point. Plotting displacement-time graphs Let’s see how to plot displacement-time graphs for moving objects.The suvat equations can be […]

## Linear and Angular motion – relationship equations

Linear and Angular motion – relationship equations

## The effect of air resistance on projectile motion

In this post, we will find the effect of air resistance on projectile motion. We have seen that in the absence of air resistance, the trajectory or path followed by a projectile is a parabola and that the path depends only on the initial speed and angle of projection. But in the real world, all […]

## How to solve projectile motion problems using Conservation of energy

In some situations, the use of conservation of energy can be a much simpler method to solve projectile motion problems than using the kinematics equations. Solving projectile motion problems makes use of the fact that Ek + Ep = constant at every point in the object’s flight (assuming no loss of energy due to friction). […]

## Worksheet on distance-time graph & velocity-time graph – Q&A

This post presents a Q&A worksheet covering distance-time graph and velocity-time graph. Before you try to solve these, you may read our posts on the distance-time graph (d-t graph) and the velocity-time graph (v-t graph).

## Motion in 2 and 3 Dimensions – formula & numerical

We will discuss and list down the formulae of position, velocity, and acceleration related to the Motion in two and three Dimensions using unit vectors i, j, and k format. We will list down the 2-Dimensional equivalent of motion equations or suvat equations. Also, we will solve numerical problems using the formulas of the position […]

## Horizontal projectiles – formulas with derivation

Horizontal projectiles are directed straight out as a horizontal projection. It undergoes downward acceleration under the influence of gravity and hence gets an increasing downward velocity. At the same time, the horizontal velocity of the horizontal projectile remains the same throughout the flight as there are no forces in the horizontal direction if you ignore […]

## Vertical Projectiles vs. Horizontal Projectiles – a detailed comparison

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, […]

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