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(A): The position-time graph of a body m...

(A): The position-time graph of a body moving uniformly is a straight line parallel to position axis.
(R): The area under position-time graph in a uniform motion gives the velocity of an object.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-MOTION IN A STRAIGHT LINE-Exercise 2A
  1. (A): Displacement of a body may be zero when distance travelled by it ...

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  2. (A): The position-time graph of a body moving uniformly is a straight ...

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  3. (A): The position-time graph of a body may be a straight line parallel...

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  4. (A): If a particle is thrown upward then distance travelled in last se...

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  5. (A) : In a position - time graph, the direction of velocity vector is ...

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  6. (A):The displacement of a body may be zero though its distance can be ...

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  7. (A): Displacement can decrease with time, but distance can never decre...

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  8. (A): The displacement of a particle starting from rest is directly pro...

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  9. (A): A metal ball and a wooden ball of same radius are dropped from th...

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  10. (A): A body may be moving with uniform speed and non uniform accelerat...

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  11. (A): Acceleration is the rate of change of velecity. (R): A body hav...

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  12. (A) : A body can have acceleration even if its velocity is zero at a g...

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  13. (A): Velocity- time graph for an object in uniform motion along a stra...

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  14. (Assertion) :A body may be accelerated even when it is moving at unifo...

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  15. (A) : Average speed is equal to total distance travelled divided by lo...

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  16. (A): The average and instantaneous velocities have same value in a uni...

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  17. (A): The speedometer of an automobile measure the instantaneous speed ...

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  18. (A): A negative acceleration of a body is associated with a slowing do...

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  19. (A): A body thrown up from the top of a tower and another body thrown ...

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  20. (A): The body falls freely, when acceleration of body is equal to acce...

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