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Question
Explain the following concept in your own words with everyday examples:
Distance
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Solution
It is the actual path length covered by an object during its motion. It is a scalar quantity.
For example, when we go to a mall for shopping from our house and then return to the house, the distance travelled by us would be twice the distance between our house and the mall.
RELATED QUESTIONS
Fill in the following blank with suitable word :
Displacement is a…………………… quantity whereas distance is a………………………….
If on a round trip you travel 6 km and then arrive back home :
What is your final displacement ?
A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards East.
What is the total distance travelled ?
Can displacement-time sketch be parallel to the displacement axis? Give a reason to your answer.
A motorbike running at 90 kmh−1, is slowed down to 54 kmh−1 by the application of brakes, over a distance of 40 m. If the brakes are applied with the same force, calculate
- total time in which bike comes to rest
- total distance travelled by bike.
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Half a revolution
A body moves along a circular path of radius r. When it completes three complete rounds, what is the ratio of distance covered to its displacement?
An object covers a distance of S meters in t seconds as follows :
| S (meters) | 0 | 8 | 20 | 20 | 16 | 10 | 0 |
| t (Seconds) | 80 | 2 | 5 | 10 | 12 | 15 | 10 |
Plot a graph, taking t on X-axis and S on Y-axis. Determine the velocity of the object at time
(i) 6 s, and
(ii) 14 s.
The table below shows the distance travelled by two vehicles A and B during each second:
| Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Distance travelled by A (m) | 0 | 20 | 80 | 180 | 240 | 300 | 360 | 420 |
| Distance travelled by B (m) | 0 | 10 | 40 | 90 | 160 | 250 | 360 | 490 |
At what time do A and B meet?Which vehicle is moving with a constant acceleration?
The displacement is zero when the initial and final positions are ______.
