science
Grade6
Easy
Question
An athlete starts running the race. Initially, she ran fast. However, she slowed down by the time she reached the middle of the race and then again picked up her speed to win the race. What kind of motion did she make during the entire race?
- Uniform
- Non-uniform
- Random
- Vertical
Hint:
For a Uniform motion, the athlete should run at the same speed throughout the race to maintain an equal distance in the equal time interval.
The correct answer is: Non-uniform
- In the case given above, we can see that the athlete first is running fast, then in the middle of the race, she slows down, and at the end of the race, she again gains speed(fast) to win the race.
- Here, we can see that the athlete does not cover complete the race with the same speed resulting in a difference in the distance covered by her in the equal time interval.
- This results in non-uniform motion.
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