Seetha is observing a moving bus with the luggage on its top. As the bus is moving slowly there is a change in the state of luggage on its top. But when the bus speeds up and starts moving fast, she noticed that the luggage on the top of the bus fell to the back of the bus. This raised many doubts in her mind regarding the effect of a frictional force acting on the luggage as well as on the tyres of the bus. Can you guess the questions raised in her mind? Write them.
The questions raised in her mind might be:
1. How does friction affect the luggage on the bus?
2. What is the kind of friction when the bus is moving slowly?
3. What is the kind of friction when the bus is moving rapidly?
4. What effect does friction have on tyres of the bus?
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