1. The cyclist traveled 40 km between points A and B.
2. The cyclist traveled at a constant speed between points A and B, then stopped between B and C, and resumed traveling at a constant speed between C and D.
3. The cyclist’s speed between points C and D is 0 km/h (stationary).
4. The cyclist’s speed between points D and E is 20 km/h.
5. The cyclist’s speed between points B and C is 0 km/h (stationary).
6. The cyclist travels between points A and B.
7. The cyclist travels between points C and D.
8. Average speed = total distance / total time = 90 km / 10 h = 9 km/h.
9. Average speed = distance between A and B / time between A and B = 40 km / 5 h = 8 km/h.
10. Average speed = distance between C and D / time between C and D = 20 km / 5 h = 4 km/h.
11. The journey to the bus stop took 100 seconds; she walked 500 meters.
12. The bus arrived after 200 seconds (she waited 100 seconds).
13. The journey from B to C took 100 seconds.
14. The woman’s house is 500 meters from the bus stop.
15. The train is 2000 meters from the woman’s house.
16. The woman walks 500 meters to the bus stop.
17. Average speed of entire bus journey = total distance / total time = 2000 m / 200 s = 10 m/s.
18. She waited 100 seconds for the bus to arrive.
19. Between points D and E, the woman is riding the bus, which is accelerating or moving at a higher constant speed than her walking pace.
Parent Tip: Review the logic above to help your child master the concept of time graph worksheet.
