Then the ratio of total displacement to the total time interval is called average velocity. Its velocity is variable as its direction changes with motion.Ĭonsider a body moving with variable velocity. I.e., Displacement = velocity × time intervalĪ body is said to be moving with variable velocity if its speed or direction or both change with time.įor example, consider a body circulating around a circle with uniform speed.
In this case, the displacement ‘s’ of the particle during a given time interval ‘t’ is obtained by taking the product of the velocity ‘v’ and the time interval ‘t’. That is, when a body is moving with uniform velocity, the magnitude and direction of velocity remain the same at any point. Now let us discuss each one in detail.Ī particle is said to be moving with uniform velocity if it covers equal displacements in equal intervals of time, that is, velocity remains constant throughout the motion. The different types of velocities are uniform velocity, variable velocity, average velocity and instantaneous velocity. It is positive when the displacement is positive(i.e., when the particle moves in the direction of increasing position co-ordinate) and negative when the displacement is negative. It can have positive, negative or zero value. The SI unit of velocity is metre/second and its dimensional formula is
If x 1 and x 2 are the position coordinates of a particle in uniform motion at the instants t 1 and t 2 respectively, its velocity is given by, The velocity of a moving particle is the distance travelled by it in unit time in a given direction, or in other words, velocity is the rate of displacement of a body. What does velocity mean and what is the formula to find velocity?
Speed and Velocity Problems with Solutions.Write the difference between speed and velocity in tabular form.Variable velocity or non-uniform velocity.What does velocity mean and what is the formula to find velocity?.What does speed mean and what is its formula?.