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Physics kinematics equations3/16/2023 ![]() ![]() Acceleration \(\vec a\): the rate of change of an object’s velocity.Velocity \(\vec v\): how quickly or slowly an object’s displacement is changing.Displacement \(\vec s\): the change in position of an object, or the difference between where it started and where it ended.In kinematics, the vectors of interest are: We say a city is 1000 km south or a car travels at 60 kmh -1 east. Vectors: A vector is any quantity that has a magnitude and a direction associated with it.Mass and area are examples of scalar quantities, e.g. A scalar requires only a number and the units to be complete. ![]() Scalars: A scalar is any quantity that has a magnitude (amount or size) but does not have a direction.Physical quantities can be classified into two main categories: In physics, we deal with a variety of quantities such as mass, distance, energy, etc. From there, we will apply our knowledge to describing one-dimensional motion, followed by expanding to motion on a plane. We will start by introducing the concept of vector quantities. Kinematics is the description and analysis of the motion of objects without studying the cause of the motion. In Year 11, we will be using more technical language compared to previous years some words which have a broad meaning in everyday life (such as ‘energy’ and ‘work’) have a specific meaning in the context of physics, and so we must ensure we all agree on their definitions. It is also used in the field of biomechanics, which is the study of human movement, to help improve the design of prosthetic devices and orthopedic implants.In this article, we’ll look at the following Kinematics topics:īefore we study the physics behind how objects behave and interact, we need to establish a precise system of language and mathematics to describe our observations. For example, kinematics is used in the design of robots and other automated systems. It helps engineers to design and build machines that can move in a specific way. In engineering, kinematics is used to design machines. The most common uses of kinematics are in the fields of engineering and medicine. It has a wide range of applications, both in the real world and in the scientific community. With these equations, we can solve more complex problems, so if you are using kinematics to solve a problem, make sure you are familiar with them.Īs we have seen, kinematics is a very important topic in physics. X=v^2-u^2/2a where x is displacement, v is final velocity, u is initial velocity, and a is acceleration. V^2=u^2 2as where v is final velocity, u is initial velocity, a is acceleration, and s is displacement X=ut 1/2at^2 where x is displacement (the distance traveled), u is initial velocity, a is acceleration, and t is time Thanks to kinematics, we now have a better understanding of how the universe works and how things move around us. Kinematics can also be used to predict the future motion of an object, based on its current motion and the forces that are acting on it. It is used to describe the motion of objects, whether they are moving in a straight line or a more complex path. Kinematics is a very important topic in physics and has a wide range of applications. However, kinematics also deals with non-linear motions such as circular or angular motion. For example, if someone walks at a speed of 2 m/s for 5 minutes, we can say that they have covered a distance of 10 meters. The simplest way to describe motion is by using distance and time. In other words, it is the branch of mechanics that deals with the description of motion. Kinematics is the study of motion without considering the forces that cause it. Credit: ThisisEngineering RAEng What is Kinematics? ![]()
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