science
Grade6
Easy
Question
The speed of a car at various time stamps are given in the table below. In which of the time interval(s) is the motion of the car non-uniform?
- 12:00 to 12:30
- 12:30 to 01:00
- 01:00 to 01:30
- Both a and c
Hint:
- For non-uniform motion, the body has to cover the unequal distance in equal time intervals.
- If a body changes its speed over an interval then it can be interpreted that it will cover either less or more distance in the particular time interval.
- For example, if the body increases its speed then it can be said that it will cover more distance at the same time as less speed.
The correct answer is: Both a and c
- In the case given above, we can see that there is data given about a car related to its speed over a time interval.
- We can observe that the car starts from 0
to 20 and again it comes to rest after some time.
- The car attains the max speed of 20 in 30 min which also shows us that the car had to cover different distances in the first ten minutes and different in the next 10 min i.e. from 12:00 to12:30.
- Also while decreasing the speed it again changes the speed and again covers different distances from 1:00 to 1:30.
- This shows that the car was covering a different distance in equal time intervals hence depicting non-uniform motion.
to 20 and again it comes to rest after some time. in 30 min which also shows us that the car had to cover different distances in the first ten minutes and different in the next 10 min i.e. from 12:00 to12:30.Related Questions to study
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