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Assertion: In case of projectile motion,...

Assertion: In case of projectile motion, acceleration horizontal component of velocity and mechanical energy remains unchanged but speed. Vertical component of velocity, momentum K.E. and P.E. change.
Reason: In the presence of air resistance, the range and maximum height attained reduce, but time of flight increases.

A

both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.

B

If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.

C

If Assertion is Trie but the Reason is False.

D

If both Assertion `&` Reason are false

Text Solution

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The correct Answer is:
B
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ALLEN -MOTION IN A PALNE-EXERCISE-3
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  2. Assertion: Rest of a body is a relative term. Reason: Motion of a bo...

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  3. Assertion: If a body moves on a straight line, magnitude of its displa...

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  4. Assertion: Separation between two bodies moving in the same direction ...

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  5. Assertion: To cross the river in minimum time swimmer should swimming ...

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  6. Assertion: A body moving with constant acceleration always travels equ...

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  7. Assertion: A body,whatever its motion, is always at rest in a frame of...

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  8. Assertion : A body droped from a given height and another body project...

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  9. Statement-I : A projectile is thrown with an initial velocity of (ahat...

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  10. Assertion: If the positon vector of a particle moving in space is give...

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  11. Assertion: In projectile motion, when horizontal range is n times the ...

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  12. Assertion: Path of projected ball becomes parabolic in gravitational f...

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  13. Assertion: In projectile motion, the acceleration is constant in both ...

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  14. Assertion: In projectile motion horizontal velocity remains same but v...

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  15. Assertion: In projectile motion, the vertical velocity of the particle...

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  16. Assertion: The path of one projectile as seen for another projectile i...

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  17. Assertion: In case of projectile motion, acceleration horizontal compo...

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  18. Assertion: In the projectile motion projected boyd behave just like a ...

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  19. Assertion: Projectile motion is uniformly accelerated motion. (Neglect...

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  20. Assertion: Horizontal range is same for angle of projection theta and...

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