1. Which of the following is a vector quantity?
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2. What is velocity?
- Speed in a particular direction
- Speed with no direction
- Change in acceleration
- A scaler quantity
3. Which of the following is a scalar quantity?
4. Where do polar orbits orbit and how long does it take?
- Above the equator + 24 hours
- Above the poles + 90 minutes
- Above the poles + 24 hours
- Above the equator + 90 minutes
5. Why is the orbit time less for a planet close to the sun?
- Travels a shorter distance+travels faster because of a greater gravitational force
- Travels a longer distance+small gravitational force
- It accelerates
- The centripetal force is large
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