Question

figure shows the distance time graph of 3 student x,y,z. study the graph and answer the following questions 1.which of the three is travelling the fastest ?
2.are all the three ever at the same point on the road ?
3.how far has Z travelled when X passes Y?
4. how far has why travel by the time it passes X?

Answer 1

1) X is travelling the fastest. As X's velocity which is given by the slope of distance-time graph is the most followed by Y and is zero for Z.

2) Yes, At the point when when their graphs coincide they are at the same distance on the same time.

3) When X passes Y, Z has travelled 0 km and is still at 6 km mark which is seen by checking Z's coordinates.

4) By the time Y passes X, it has travelled 6 km. Which can easily be seen by checking Y's distance coordinates.