Question : A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 ms−1 at an angle of 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 ms−2 , sin 30° = 1/2, cos 30° = √3/2
(A) 5.20 m
(B) 4.33 m
(C) 2.60 m
(d) 8.66 m
Answer : option (D)
Solution :
