Question

Answer the following questions :
a) which Runner won the race?

b) which runner stopped for a rest &how long did he stop far?

c) How long did B take to complete the race?

d) Calculate the runner A's average speed? ​

Answer 1

Answer:

A. Albert

Explanation:

Answer 2

Answer:

• Runner A won the race.
• Runner c stopped for the rest and took rest for 4 sec.
• B took 10.5 sec to complete the race.
• The average speed of runner A is 22.22m/s

Explanation:

• The given graph is the distance vs time graph.

1. Since in the graph the time taken by runner A is smallest, then A  won the race.
2. The graph of runner C has a straight line parallel to the x-axis showing that the distance moved by the runner was the same for 4 sec. Thus Runner c stopped for the rest and took rest for 4 sec.
3. From the graph, the time taken by runner A is 10.5 sec.
4. Speed is given by

        $average\ speed = \frac{Distance}{Time}$

       $average\ speed=\frac{200}{9}\\average\ speed=22.22\ m/sec$