A man started his journey on his car from location A and came back. The given graph shows his position at different times during the whole journey.
(a) At what time did he start and end his journey?
(b) What was the total duration of the journey?
(c) Which journey, forward or return, was of longer duration?
(d) For how many hours did he not move?
(e) At what time did he have the fastest speed?
Solution:
(a)The man started his journey at 5:30 am and ended at 6pm
(b) The total duration of the journey is 12.5 hours
(c) The forward journey was of longer duration
(d)The man does not move for 3 + 3 = 6 hours
(e) He had the fastest speed between 1 pm and 1:30 pm. In half an hour he covered 40 Km i.e. 80km/hour.
✦ Try This: A man started his journey on his car from location A and came back. The given graph shows his position at different times during the whole journey.
(a) At what time did he start and end his journey?
(b) What was the total duration of the journey?
(c) Which journey, forward or return, was of longer duration?
(d) For how many hours did he not move?
(e) At what time did he have the fastest speed?
(a) He started his journey at 5 am and ended at 6 am
(b)Total duration of the journey was 13 hours
(c )The forward journey which lasted 7.5 hours was longer than the return journey
(d)For 6.5 hours (from 6am to 9 am and from 11am to 12:30pm) he was not moving
(e) For half an hour between 11:30 am and 12:00 pm he had the fastest speed of 80km/hour(40km/0.5 hour)
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 15
NCERT Exemplar Class 8 Maths Chapter 12 Problem 70
A man started his journey in his car from location A and came back. The given graph shows his position at different times during the whole journey. (a) At what time did he start and end his journey? (b) What was the total duration of journey? (c) Which journey, forward or return, was of longer duration? (d) For how many hours did he not move? (e) At what time did he have the fastest speed?
Summary:
The graph in the solution shows the position of the car from the location A at various points of time till it comes back to its starting point.
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