Question

The graph given alongside shows how the distance of a bicycle changes with time.

(i) Find the speed of the bicycle in first 30 sec.

(ii) What is the maximum distance covered by the bicycle?

(iii) When was the bicycle travelling faster --- in the first 30 sec or between 50-70sec.

(iv) For how much time was the bicycle at rest.

(v) What distance had the bicycle covered in 50 sec.

(vi)What type of motion did the bicycle have in the last 20 seconds.

Answer 1

Explanation:

1) It was moving in uniform motion. So speed = distance/time = 100/30 = 3.3333333...m/pr second

2) 400m

3) Between 50-70 seconds because it shows a drastic decrease of time and increase of distance in the time graph

4) 30-50 seconds, because it was a straight horizontal line, so it did not cover any distance and took only the time

5) 100m

6) Uniform motion, as it is a straight line

A straight line means it's uniform motion