# Two balls 𝐴 and 𝐵 are thrown simultaneously from the top of a tower. 𝐴 is thrown vertically up with a speed of 4ms −1 . 𝐵 is thrown vertically down with a speed of 4 ms −1 . The ball 𝐴 and 𝐵 hit the ground with speed 𝑣𝐴 and 𝑣𝐵 respectively. Then

Question : Two balls 𝐴 and 𝐵 are thrown simultaneously from the top of a tower. 𝐴 is thrown vertically up with a speed of 4ms −1 . 𝐵 is thrown vertically down with a speed of 4 ms −1 . The ball 𝐴 and 𝐵 hit the ground with speed 𝑣𝐴 and 𝑣𝐵 respectively. Then

(A) $v_{A}

(B) $v_{A} >v_{B}$

(C) $v_{A}\geqq v_{B}$

(D) $v_{A}=v_{B}$

Answer : option (D)

Solution :

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