A projectile is fired horizontally with a velocity of `98 ms^(-1)` from the top of a hill 490 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.

Explanation

To solve the problem step by step, we will break it down into three parts as requested: (i) time taken to reach the ground, (ii) distance of the target from the hill, and (iii) velocity with which the projectile hits the ground.

### Step 1: Calculate the Time Taken to Reach the Ground

1. **Identify the known values**:
- Height (h) = 490 m
- Initial vertical velocity (u_y) = 0 m/s (since it is fired horizontally)
- Acceleration due to gravity (g) = 9.8 m/s²
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