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A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle 30° with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ? [g = 10 m/s2, sin 30° = 1/2, cos 30° = ]   
[AIEEE 2003]
  • a)
    5.20 m
  • b)
    4.33 m
  • c)
     2.60 m
  • d)
     8.66 m
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A boy playing on the roof of a 10 m high building throws a ball with a...
We have to simply calculate the range of the projectile.
► R = u2sin2θ/g
► R = (10)2 * sin (2 * 30º) / 10 
► R = 10 * (√3/2) = 8.66 m 
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Community Answer
A boy playing on the roof of a 10 m high building throws a ball with a...
As the angle is 30,
tan 30 = √3/2,
Side length = 10,

√3/2 *10 = 8.66
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A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle 30° with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ? [g = 10 m/s2, sin 30° = 1/2, cos 30° =] [AIEEE 2003]a)5.20 mb)4.33 mc)2.60 md)8.66 mCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle 30° with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ? [g = 10 m/s2, sin 30° = 1/2, cos 30° =] [AIEEE 2003]a)5.20 mb)4.33 mc)2.60 md)8.66 mCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle 30° with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ? [g = 10 m/s2, sin 30° = 1/2, cos 30° =] [AIEEE 2003]a)5.20 mb)4.33 mc)2.60 md)8.66 mCorrect answer is option 'D'. Can you explain this answer?.
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