Time (min)
Distance (km)
0
20
0
20
40
60
80
100
120
65
95
125
155
(a) Find the values of , and 02.
(b) When did the bus change its speed?
(c) What is the distance covered in the first hour?
(d) What is the distance covered in the second
hour?
(e) What is the average speed for the complete
journey?
Answers
Answered by
2
Explanation:
Given :
Distance - Time graph:
Time (min) 0 20 40 60 80 100 120
Distance(Km) 0 20 40 65 95 125 155
1. Find the values of v1 and v2:
V1=Distance/Time=20/20=1km/min
V2=1.25km/hr
2.When did the bus change it's speed?
Bus changed its speed when t=60min
3.What is the distance covered in the 1st hour?
Distance covered in first hour is 65km
4.What is the distance covered in the 2nd hour?
Distance covered in second hour is 155-65km=90km
5.What is the average speed for the complete journey?
Average speed=total distance/total time
total distance=155km
time=120min =2hours
Average speed=155/2=77.5km/h
Answered by
0
Answer:See answers in part 9 of image.
Explanation:
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