Question : A particle 𝐴 is projected from the ground with an initial velocity of 10 ms−1 at an angle of 60° with horizontal. From what height ℎ should an another particle 𝐵 be projected horizontally with velocity 5ms −1 so that both the particles collide in ground at point 𝐶 if both are projected simultaneously? (g = 10 ms −2 )
(A) 10 m
(B) 30 m
(C) 15 m
(D) 25 m
Answer : option (A)
Solution :
