Question

Define average speed in case of non-uniform motion. What is it equal to in case of uniform motion?

Answer 1

A motion in which the body travels unequal lengths in equal intervals of time is identified as a non – uniform motion. In non-uniform motion, the speed of the body is not constant; changing with respect to the time but in uniform motion, the speed of the body is constant.

Complete step-by-step solution:
Non-Uniform motion is expressed as the motion of a body in which the body moves at different speeds, and it does not travel the same distance in regular time intervals, no matter the time interval duration. The Distance-time graph displays a curved line in non-uniform.
Each moment when the velocity of the traveling object alters by a varying rate, in the same period, the motion of the body is seen as non-uniform motion. The displacement rate of the object differs every minute as the velocity increments or reduces concerning time. The actual speed is distinct from the actual speed of the object. Speeds are changing with regular intervals of time; we need to find the average speed for finding the mean speed.
Uniform motion is expressed as the motion of a body in which the body moves in a straight line, and its speed remains fixed along with that line as it travels equal distances in regular intervals of time, no matter the duration of the time. The Distance-time graph displays a straight line in uniform motion.
The average speed describes the total distance it moves divided by the period which is passed. Moreover, this time elapses to cover that appropriate distance. Furthermore, the average speed is absolutely a scalar quantity because it is mainly determined by a magnitude mainly. The average speed is comparable to the actual speed of the object.
The average speed is described as that uniform speed with which it travels the same distance in a provided interval of time as is travelled by it in the equal interval of time while traveling with changeable speed. It is provided by the ratio of the total distance travelled by the body to the whole time.

Note: The relationship of the distance and time to a straight uniform movement is always the same. Constant speed indicates that the object moves similar movements for same time intervals, always in the equal direction in a vertical line. The speed is equivalent to zero.