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9. Here is a distance-time graph for a train journey ​

9. Here is a distance-time graph for a train journey ​-example-1

1 Answer

4 votes

Answer:

a. 2/3 miles per minute

b. between 50 to 60 minutes with a speed of 3 miles per minute (circle that please)

c. because it took the shortest time to cover the longest distance.

Explanation:

a . Speed = Distance covered/ Time taken

= 20/30

= 2/3 miles per minute

b. we shall have to calculate the speed in the three parts to determine where it travels fastest

Speed = Distance covered/ Time taken

between 0 to 40 minutes

Speed = 30/40

= 3/4 miles per minute

between 50 to 60 minutes

Speed = 30/10

= 3 miles per minute

hence we can conclude that it travels fastest between 50 to 60 minutes with a speed of 3 miles per minute (circle that please)

C. because it took the shortest time to cover the longest distance.

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