Two bodies are projected horizontally at the same time from the top of a tower of height $78.4\text{m}$. If their velocities are $30\text{m/s}$ and $40\text{m/s}$ respectively, find the difference between the times taken by them for hitting the ground.

Q. Two bodies are projected horizontally at the same time from the top of a tower of height $78.4\text{m}$. If their velocities are $30\text{m/s}$ and $40\text{m/s}$ respectively, find the difference between the times taken by them for hitting the ground.

Q. Two bodies are projected horizontally from the top of a tower of height of 20 m with velocities ${30ms}^{-1}and60{ms}^{-1}$. The ratio of time taken by them to reach the ground is ____.

Q. From the top of a tower of height $78.4m$ two stones are projected horizontally with $10m/s$ and $20m/s$ in opposite directions. On reaching the ground, their separation is

Q. Two balls are projected horizontally from the top of a building simultaneously with velocities of 12 m s${}^{-1}$ and 15 m s${}^{-1}$ respectively. The ratio of times taken by them to reach the ground is ________.

Q. From the top of a tower of height $40\text{m}$, a ball is projected upwards with a speed of $20\text{m/s}$ at an angle of elevation of ${30}^{\circ }$. Then the ratio of the total time taken by the ball to hit the ground to the time taken by the ball to come at the same level as the top of the tower (Take $g=10{\text{ms}}^{-2})$