A body is projected from the bottom of a smooth inclined place with a velocity of `20 ms^(-1)`, If it is just sufficient to carry it to the top in `4 s`, find the inclination and height of the plane.

Explanation

To solve the problem of a body projected from the bottom of a smooth inclined plane with an initial velocity of \(20 \, \text{m/s}\) and reaching the top in \(4 \, \text{s}\), we can follow these steps:

### Step 1: Identify the given parameters
- Initial velocity, \(u = 20 \, \text{m/s}\)
- Time of travel, \(t = 4 \, \text{s}\)
- Final velocity at the top of the incline, \(v = 0 \, \text{m/s}\) (since it just reaches the top and momentarily stops)

### Step 2: Apply the first equation of motion
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