High School Physics
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 […]
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 […]
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 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 […]
3 different types of vertical projectile motion
[PDF] 25 Motion Numerical Problems for Class 9
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 […]
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 […]
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 […]
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 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 […]
In this post, let’s solve a set of Numericals on distance and displacement for 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 Linear displacement and Angular Displacement
In this post, we will list a set of examples of Inertia (in fact, for all 3 types of inertia) for class 9 students.
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?
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.
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
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 is thrown vertically upward its velocity at the highest point is
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.
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 qith derivation
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.
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.
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.
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.
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.
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 – 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).
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.
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 […]
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 […]
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 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
