Define (i) uniform velocity (ii) variable velocity (iii) average velocity and (iv) instantaneous
velocity.
Answers
Answer:
Explanation:
Velocity: The time rate of change of position of a body in a particular direction is known as its velocity.
Uniform velocity: A body is said to be moving with uniform velocity if its average velocity between any two points along its path is the same in magnitude as well as direction.
Variable velocity: A body is said to be moving with variable velocity if its average velocity is different between different points along its path either in magnitude or in direction or both in magnitude as well as direction.
average velocity :he average velocity of an object is its total displacement divided by the total time taken. In other words, it is the rate at which an object changes its position from one place to another. Average velocity is a vector quantity. The SI unit is meters per second.
Instantaneous velocity: When a body is moving with variable velocity, then its velocity at a particular instant of time or at a particular point along its path is known as its instantaneous velocity. It is equal to the limiting value of average velocity as dt tends to zero. Instantaneous velocity is equal to the differential coefficient of displacement w.r.t time.
Explanation:
(i) uniform velocity : If a body travels equal distances in equal intervals of timealong a particular direction then it is said to be moving with uniform velocity.
(ii) variable velocity : if a body covers an equal displacement in equal intervals of time then it is said to be moving with variable velocity.
(iii) average velocity : the the average velocity of an object is its total displacement divided by total time taken.
(iv) instantaneous velocity : the quantity that tells us how fast an object is moving anywhere along its path is the instantaneous velocity.
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