A particle is dropped from height `h = 100 m`, from surface of a planet. If in last `1/2` sec of its journey it covers 19 m. Then value of acceleration due to gravity that planet is :

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the problem
A particle is dropped from a height of \( h = 100 \, \text{m} \) and covers \( 19 \, \text{m} \) in the last \( \frac{1}{2} \) second of its fall. We need to find the acceleration due to gravity \( g \) on that planet.

### Step 2: Define the variables
Let:
- \( h = 100 \, \text{m} \) (total height)
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