A body thrown vertically upwards reaches a maximum height `h`. It then returns to ground . Calculate the distance travelled and the dispacement .

Explanation

To solve this problem, we need to understand the concepts of distance traveled and displacement in the context of motion.

### Step-by-Step Solution:

1. **Identify the given information:**
- A body is thrown vertically upwards.
- It reaches a maximum height \( h \).
- It then returns to the ground.

2. **Calculate the distance traveled:**
- When the body is thrown upwards, it travels a distance \( h \) to reach the maximum height.
- After reaching the maximum height, it travels the same distance \( h \) downwards to return to the ground.
- Therefore, the total distance traveled is the sum of the distance traveled upwards and the distance traveled downwards.
\[ \text{Distance traveled} = h + h = 2h \]

3. **Calculate the displacement:**
- Displacement is the straight-line distance between the initial and final positions, along with the direction.
- The body starts from the ground (initial position) and returns to the ground (final position).
- Since the initial and final positions are the same, the displacement is zero.
\[ \text{Displacement} = 0 \]

### Final Answer:
- **Distance traveled:** \( 2h \)
- **Displacement:** \( 0 \)