![]() The SI unit of the velocity is m/s.ĭifference between speed and velocity SpeedĪ body is said to be in uniform velocity if the body covers equal distance in equal interval of time in a straight line. It is defined as displacement per unit time. It is defined as the distance travelled per unit time. It is measured in metre (m) in SI system. The shortest distance from the initial position to the final position of a body is called displacement of the body. ![]() The length of the actual path travelled by a body is called the distance travelled by the body. They are represented by a letter with an arrow head, p or by a bold letter, p↑ They are added by simple rules of arithmetic The sum of vectors may be zero, positive and negative. are vectors.ĭifference between vectors and scalars Vectors Velocity, acceleration, force, displacement etc. Those physical quantities which require both magnitude and direction for their complete description are called vector quantities or vector. ![]() Distances, speed, time, mass, work, energy, density, volume, area, pressure etc. Those physical quantity which require only magnitude for their complete description are called scalar quantities or simply scalar. ![]()
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February 2023
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