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In the motion of a projectile freely und...

In the motion of a projectile freely under gravity, its

A

total mechanical energy is conserved

B

momentum is conserved

C

mechanical energy and momentum both are conserved

D

None is conserved

Text Solution

Verified by Experts

The correct Answer is:
A
An external force by gravity is present throughout the motion. So, momentum will no be conserved.
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DC PANDEY-MOTION-Check Point 4.2
  1. At the top of the trajectory of a projectile, the directions of its ve...

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  2. At the top of the trajectory of a projectile, the directions of its ve...

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  3. In the motion of a projectile freely under gravity, its

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  4. When a stone is projected which remains constant?

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  5. A stone is projected with speed of 50 ms^(-1) at an angle of 60^(@) wi...

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  6. A football player throws a ball with a velocity of 50 metre/sec at an ...

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  7. A particle is projected with a velocity of 20 ms^(-1) at an angle of 6...

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  8. If 2 balls are projected at angles 45^(@) and 60^(@) and the maximum h...

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  9. If the initial velocity of a projectile be doubled, keeping the angle ...

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  10. For a projectile, the ratio of maximum height reached to the square of...

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  11. A particle is projected from ground with speed u and at an angle theta...

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  12. A projectile, thrown with velocity v(0) at an angle alpha to the horiz...

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  13. A particle is projected at an angle of 45^(@) with a velocity of 9.8 m...

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  14. Two projectiles are fired from the same point with the same speed at a...

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  15. A projectile fired with initial velocity u at some angle theta has a ...

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  16. An object is thrown along a direction inclined at an angle of 45^(@) w...

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  17. An object is projected at an angle of 45^(@) with the horizontal. The ...

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  18. The horizontal range of a projectile is 4 sqrt(3) times its maximum he...

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  19. A ball is projected with a velocity 20 sqrt(3) ms^(-1) at angle 60^(@)...

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  20. A projectile is thrown with a velocity of 10 ms^(-1) at an angle of 60...

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