Example 18. A boy reached a railway station 4 km away from his house running with a uniform speed
in 1.0 hour. He took rest for 0.5 hour at the station and then came back to his house walking with a uniform
speed in 1.5 hour. Represent the whole journey of the boy by a 'time-displacement graph' and determine
his average speed. give full solution
Answers
Answered by
0
Answer:
Let distance from home to station =D
When speed is 6, time =
6
D
When speed is 7, time =
7
D
According to the question,
6
D
−
7
D
=15minor
60
15
42
D
=
60
15
=
4
1
D=
4
42
=10.5km
Similar questions