Question

13. Observe the distance-time graph depicting journey of an athlete and answer the following questions [3] 12 10 Distance km Time (h) a) What did the athlete do between 2 and 3 hours after the start of the journey? b) What distance is covered after 2 hours? c) Calculate the average speed of the journey.​

Answer 1

Answer:

1. They stopped to take a rest.
2. 12km
3. Average speed:

• Time at 1 St point = 2 hrs
• Time at 2 and point=3.5hrs

Total time=2+3.5

=5.5hrs

• Distance at 1st point=12 km
• Distance at 2nd point=12 km

Total distance= 12 +12=24km

Average speed= total distance÷total time

=24÷5.5

=4.36 km/hr