CBSE Class 9 Science Describing Motion Around Us (Class 9 NCERT New) Quiz 11

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CBSE › Class 9 › Science › Describing Motion Around Us (Class 9 NCERT New)

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1. What is the average speed if a body travels 20 km in 1 hour and 30 km in 2 hours?

A 20 km/hr B 25 km/hr C 30 km/hr D 15 km/hr

2. What is the formula for calculating acceleration?

A a = v/t B a = s/t C a = u + at D a = (v-u)/t

3. Which of the following describes uniform circular motion?

A Changing speed and changing velocity B Zero speed C Constant speed and constant velocity D Constant speed with changing velocity

4. What happens to the velocity of a body in uniform motion?

A It increases B It decreases C It remains constant D It becomes zero

5. What is the average velocity if the displacement is 100 m and the time taken is 5 s?

A 30 m/s B 20 m/s C 25 m/s D 15 m/s

6. Which of the following is true about vector quantities?

A They are always positive. B They can be negative. C They have both magnitude and direction. D They have only magnitude.

7. What is the term for the rate of change of velocity?

A Speed B Displacement C Distance D Acceleration

8. If a car travels 60 km in 1 hour and then 90 km in 2 hours, what is the average speed?

A 80 km/hr B 70 km/hr C 60 km/hr D 50 km/hr

9. What is the formula for the first equation of motion?

A s = ut + ½ at² B s = vt C v = u + at D v² = u² + 2as

10. What is the total distance traveled by a body moving with uniform acceleration?

A s = vt B s = ut + ½ at² C s = v - u D s = u + at

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