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A particle travels half the distance of a straight journey with a speed 5 m/s. The remaining part of the distance is covered with speed 6 m/s for half the remaining time, and with speed 4 m/s for the other half of the remaining time. The average speed of the particle is

A

3 m/s

B

4 m/s

C

`(3)/(4)` m/s

D

5 m/s

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The correct Answer is:
D
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AAKASH INSTITUTE-MOTION IN STRAIGHT LINE-Assignment (SECTION - B)
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  2. A particle travels half the distance of a straight journey with a spee...

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  3. A stone is dropped from the top of a tower and travels 24.5 m in the l...

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  4. Two balls X and Y are thrown from top of tower one vertically upward a...

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  5. A body starts from rest with an acceleration 2m//s^(2) till it attains...

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  6. If speed of water in river is 4 m/s and speed of swimmer with respect ...

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  7. The reation between the time t and position x for a particle moving on...

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  8. A particle starts from rest. Its acceleration is varying with time as ...

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  9. To particles P and Q are initially 40 m apart P behind Q. Particle P s...

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  10. Figure shows the graph of x-coordinate of a particle moving along x-ax...

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  11. A body is thrown vertically upward with velocity u. The distance trave...

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  12. A ball is thrown vertically upward with a velocity u from balloon desc...

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  13. A constant force acts on a particle and its displacement x (in cm) is ...

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  14. A particle located at x = 0 at time t = 0, starts moving along the pos...

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  15. A train is moving with uniform acceleration. The two ends of the train...

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  16. Which graph represents an objects at rest ?

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  17. Which graph represents positive acceleration ?

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  18. The acceleration-time graph of a particle moving along a straight line...

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  19. A particle obeys the following v - t graph as shown. The average veloc...

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