Question

By giving one example each, define : (a) uniform velocity, (b) variable velocity and (c) average velocity​

Answer 1

Answer:

a) When a body moves in equal distance in equal intervals of time is known as uniform velocity.

Ex-a ball rolling on the floor in a constant velocity.

b) Velocity in which the space described varies from instant to instant, either increasing or decreasing; - in the former case called accelerated velocity, in the latter, retarded velocity; the acceleration or retardation itself being also either uniform or variable.

Give an example of the motion of a body moving with a constant speed but with a variable velocity.

c) Average velocity is the displacement of an object over time. To find the average speed of an object we divide the distance travelled by the time elapsed. We know that velocity is a vector quantity and average velocity can be found by dividing displacement by time.

Example: If a particle is moving in a circle, after one revolution, the distance will be the perimeter of the circle while the displacement would be zero. Now, let us see what speed and velocity actually are. Speed: Speed is a scalar quantity which means it has no direction. It denotes how fast an object is moving

Answer 2

Explanation:

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