Two 4. A person simultaneously throws two objects A and B into the air. Objects are thrown with the same speed, different angles, and move along different parabolic paths as shown in the figure on the right. Rock is projected from the edge of the top of a building with an initial velocity of 12.2 m / s at an angle of 53 ° above the horizontal. The stone hits the ground at a horizontal distance of 25 m from the base of the building. Suppose the ground is level and the building part is vertical. How tall is the building? choose an answer A

Two 4. A person simultaneously throws two objects A and B into the air. Objects are thrown with the same speed, different angles, and move along different parabolic paths as shown in the figure on the right. Rock is projected from the edge of the top of a building with an initial velocity of 12.2 m / s at an angle of 53 ° above the horizontal. The stone hits the ground at a horizontal distance of 25 m from the base of the building. Suppose the ground is level and the building part is vertical. How tall is the building? choose an answer A

A	B	C	D	E
A reaches the first floor	B reaches the first floor	A and B arrive simultaneously	Either of the 2 can arrive first	Cannot predict