Question

define average speed, average velocity,acceleration​

Answer 1

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Average speed : The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.

Formula : s = d/t {i.e. “s” is average speed, “d” is distance and “t” is time.}

Average velocity : Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time.

Formula : v = d/t {“v” is average velocity, “d” is displacement and “t” is time}

Acceleration : Acceleration is a change in the rate of motion, speed or action. An example of acceleration is increasing your driving speed from 45 to 55 to merge with traffic.

Formula : a = (vf – vi) ÷ (tf – ti) {“a” is average acceleration, “vf” is final velocity, “vi” is initial velocity, “tf” is final time and “ti” is initial time}

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Answer 2

Answer:

Average speed

It is important to understand the rate at which a journey takes place. Throughout a journey, the speed may vary from time to time.

Formula

Average speed = Total Distance /Total Time

                                                                                                                   

Average velocity

The average velocity of a body in a certain time interval is given as the displacement of the body in that time interval divided by time.

Formula

Average Displacement = Total Displacement /Total Time