Physics
Grade-9
Easy
Question
Which is the odd one out?
- Causes wear and tear
- Writing
- Stopping vehicles
- Slows down the speed
Hint:
Writing is an advantage of frictional force where friction between pen and paper enables us to write.
The correct answer is: Writing
Writing is the odd one out.
- The actions that cause wearing and tearing, stopping the vehicle, and slowing down the speed of a moving object require external opposing force and cause more friction.
- Writing is an activity carried out by internal force from the body. Since friction between pen and paper allows writing, it is an advantage as compared to other activities.
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