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A body is thrown horizontally from the t...

A body is thrown horizontally from the top of a tower and strikes the ground after three seconds at an angle of `45^@` with the horizontal. Find the height of the tower and the speed with which the body was projected. (Take ` g = 9.8 m//s^2`)

A

39.8 m

B

55 m

C

33 m

D

44.1 m

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The correct Answer is:
D
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MOTION-PROJECTILE MOTION-EXERCISE-2
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  2. A bullet fired at an angle of 60^(@) with the vertical to the levell...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. The position coordinates of a projectile projected from ground on a ce...

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  20. A particle moves along a parabolic parth y = 9x^(2) in such a way that...

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