Imagine yesterday you left your house at 6:30 am for your school. After completing this journey of 3 km you found that the school was closed and came back to your home at 7:45 am. Find (i) the distance travelled by you, and (ii) your final displacement.
Answers
The answer is 6km and 0 km.
Given,
The distance between house and school = 3km
To Find,
The total distance traveled =?
The final displacement =?
Solution,
The total distance of the journey = Distance traveled by going to school + Distance traveled by coming back home
The total distance of the journey = 2(Distance between home and school)
The total distance of the journey = 2 * 3km
The total distance of the journey = 6 km
The final displacement = Distance traveled by going to school - Distance traveled by coming back home
The final displacement = 3 - 3 = 0 [As final point is same as the initial point]
Hence, the distance traveled by you is 6 km and my final displacement is 0.
Left home at = 6:30 am
returned home at= 7.45 am
Distance between home and school= 3km
The total distance of the journey = Distance traveled by going to school + Distance traveled by coming back home
The total distance of the journey = 2(Distance between home and school)
The total distance of the journey = 2 x 3km
= 6 km
The final displacement = Distance traveled by going to school - Distance traveled by coming back home
(A displacement is a vector whose length is the shortest distance from the initial to the final position)
The final displacement = 3 - 3 = 0 [As final point is same as the initial point]
Hence, the distance traveled by you is 6 km and final displacement is 0.
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