High School Physics


Numerical problem based on parachutist & Terminal Velocity

Question: The force of air resistance F acting on a parachute is given by the equation F = 83 + 14.6v2where v is the velocity in m/s and F is measured in newtons (N). A parachutist of total weight 680 N is descending, Calculate the terminal velocity of the parachutist. Solution: At terminal velocity, air […]

Displacement from a velocity-time graph – how to find out?

We can find the displacement of a moving object from its velocity-time graph. This is given by the area under this graph: displacement = area under velocity-time graph Finding displacement from a velocity-time graph when the object is moving at a steady velocity It is easy to see why this is the case for an […]

Speed and velocity numerical for class 9

This tutorial on Speed and velocity numerical is for class 9 physics students of CBSE and ICSE boards. This also covers AS Physics Kinematics (motion). Equations for velocity There are three ways in which the equation for velocity v = s/t can be rearranged, depending on which quantity we want to determine. Here, v denotes […]

Velocity from a Displacement-Time Graph – how to derive?

Velocity is the ratio of the displacement and the time duration. Hence, velocity can be obtained from the gradient of a displacement-time graph. Velocity = gradient of displacement-time graph Drawing a displacement-time graph from a set of data Let’s take a case study of a toy car that moves along a straight track. Its displacement […]

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 […]

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.

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. A graph of displacement against time for an accelerating object always produces a curve. Acceleration is the rate of change of the gradient on the displacement-time graph If the object is accelerating at a uniform rate, then the rate of […]

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 […]

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