Application of Negative Numbers in Speed Distance Time
A man walked ...
Question
A man walked 3 km towards North then 8 km towards South. What is his final position with respect to his initial position?
A
5 km towards East
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
3 km towards South
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
8 km towards North
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
5 km towards South
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The north direction can be taken as positive and south as negative. Then walking 3 km towards north can be taken as +3 units. Walking 8 km towards south can be taken as -8 units. The final position = +3 - 8 = -5 units. Here, the '-' sign shows that he is in the south direction with respect to his initial position. So, the man's final position is 5 km towards south with respect to his initial position.