Question

Q. (i) What is the nature of the distance-time graphs for uniform and non-uniform motionof an object?
(ii) Distinguish between speed and velocity.
(iii) An athlete completes one round of a circular track of diameter 200 m in 40 s. What
will be the distance covered and the displacement at the end of 2 minutes 20 s?

step by step explanation for all q​

Answer 1

Explanation:

ii) Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

i) For uniform motion, the distance-time graph is a straight line parallel to the time axis as speed will be constant. The distance-time graph for non-uniform motion is not a straight line since speed is variable, it can be a curve or a zigzag line. Was this answer helpful?

iii)Time is taken by an athlete to complete one round = 40 seconds. Distance covered = ?? Displacement = ?? Hence, the distance covered at the end of 2 min 20 seconds is 2200 m or 22 km.