Chapter 2, Problem 35R

To determine

The correct option to be chosen.

Answer to Problem 35R

Option (A) is the correct answer.

Explanation of Solution

Calculation:

An object is said to be at constant speed if it travels equal distance in the same time interval.If, at the same time interval, the object moves the unequal distance, then speed becomes variable speed.Instantaneous speed is the speed of the object at a given time period. During the motion, the instantaneous speed changes from position to position. Therefore, the options (B), (C), and (D) are wrong.

When total distance by an object is divided by the total time taken by the object, then this quantity is called as average speed.

Conclusion:

Hence,the average speed of the object is the total distance covered over the total time of the journey.