269808 A ball\(A\) is dropped from thetop of a building and at the same time an identical ball \(B\) is thrown vertically upward from the ground. When the ballscollidethe speed of \(A\) is twice that of \(B\). At what fraction of the height of the building did the collision occur?

269809 An object falls from a bridge that is\(45 \mathrm{~m}\) above the water.It falls directly into a small row-boat moving with constant velocity that was \(12 \mathrm{~m}\) from the point of impact when the object was released. What was the speed of the boat? \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

269782 A person sitting onthetop of a tall building is dropping balls at regular intervals of one second. When the 6th ball is being dropped, the positions of the 3rd, 4th, 5th balls from the top of the building are respectively

269808 A ball\(A\) is dropped from thetop of a building and at the same time an identical ball \(B\) is thrown vertically upward from the ground. When the ballscollidethe speed of \(A\) is twice that of \(B\). At what fraction of the height of the building did the collision occur?

269809 An object falls from a bridge that is\(45 \mathrm{~m}\) above the water.It falls directly into a small row-boat moving with constant velocity that was \(12 \mathrm{~m}\) from the point of impact when the object was released. What was the speed of the boat? \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

269782 A person sitting onthetop of a tall building is dropping balls at regular intervals of one second. When the 6th ball is being dropped, the positions of the 3rd, 4th, 5th balls from the top of the building are respectively

269808 A ball\(A\) is dropped from thetop of a building and at the same time an identical ball \(B\) is thrown vertically upward from the ground. When the ballscollidethe speed of \(A\) is twice that of \(B\). At what fraction of the height of the building did the collision occur?

269809 An object falls from a bridge that is\(45 \mathrm{~m}\) above the water.It falls directly into a small row-boat moving with constant velocity that was \(12 \mathrm{~m}\) from the point of impact when the object was released. What was the speed of the boat? \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

269782 A person sitting onthetop of a tall building is dropping balls at regular intervals of one second. When the 6th ball is being dropped, the positions of the 3rd, 4th, 5th balls from the top of the building are respectively