A particle is fired horizontally with a velocity $98m{s}^{-1}$ from the top of a tower 490m high. The time taken by the projectile to hit the ground is:$:\left(g=9.8m/s^2\right)$

Q. A projectile is fired horizontally with a velocity of $98m/s$ from the top of a hill $490m$ high. Find the velocity with which the projectile hits the ground. $(g=9.8m/s^2)$

Q. A projectile is fired horizontally with a speed of $98m{s}^{-1}$ from the top of a hill $490m$ high. Find the magnitude of the vertical velocity with which the projectile hits the ground. (Take $g=9.8m/s^2$)

Q. A projectile is fired horizontally with a velocity of $98m/s$ from the top of a hill $490m$ high. Find the time taken by the projectile to reach the ground.

Q. A projectile is fired horizontally with a speed of $98m{s}^{-1}$ from the top of a hill $490m$ high. Find the time taken to reach the ground.

Q. A projectile is fired horizontally with a speed of $98{\text{ms}}^{-1}$ from the top of a hill $490\text{m}$ high. Find
(i) The time taken to reach the ground
(ii)The distance of the target from the hill and
(iii)The velocity with which the projectile hits the ground. (take $g=9.8{\text{m/s}}^2$)