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The initial speed of an arrow shot from ...

The initial speed of an arrow shot from a bow, at an elevation of `30^(@)," is "15 ms^(–1)`. Find its velocity when it hits the ground back

A

15 m/sec at `30^(@)` clockwise from horizontal

B

15 m/sec at `60^(@)` clockwise from horizontal

C

7.5 m/sec at `30^(@)` clockwise from horizontal

D

7.5 m/sec at `60^(@)` clockwise from horizontal

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The correct Answer is:
A
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MOTION-PROJECTILE MOTION-EXERCISE-2
  1. The initial speed of an arrow shot from a bow, at an elevation of 30^(...

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  2. A projectile has a range of 40 m and reaches a maximum height of 10 m....

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  3. A stone is thrown with a speed of 10 ms^(-1) at an angle of projection...

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  4. A bullet fired at an angle of 60^(@) with the vertical to the levell...

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  5. An object is projected with velocity vecv(0) = 15hati + 20hatj . Cons...

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  6. A particle projected from origin moves in x-y plane with a velocity ve...

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  7. A particle is projected from ground with speed 80 m/s at an angle 30^(...

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  8. A projectile is thrwon into space so as to have the maximum possible h...

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  9. If the time of flight of a bullet over a horizontal range R is T, then...

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  10. In the graph shown in figure, which quantity associated with projectil...

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  11. A projectile is thrown with velocity v at an angle theta with the hori...

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  12. If the horizontal range of projectile be (a) and the maximum height at...

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  13. A ball is projectedfrom ground at an angle 45^(@) with horizontal from...

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  14. A particle is projected from ground at an angle theta with horizontal ...

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  15. A particle is thrown with a velocity of u m/s. It passes A and B as sh...

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  16. The momentum of a body is increased by 25%. The kinetic energy is incr...

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  17. A body is thrown horizontally from the top of a tower and strikes the ...

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  18. Two paper screens A and B are separated by a distance of 100m. A bulle...

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  19. A ball is projected from a point O as shown in figure. It will strike ...

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  20. A ball rolls of the top fi a strair way with horizonntal velocity of m...

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