Choose the correct statement.

Options

A. Unit of acceleration is m `s^(-2)`.
B. Speed = distance/time.
C. Magnitude of displacement made by a body is less than or equal to the distance travelled by the body.
D. All of the above

Explanation

To solve the question "Choose the correct statement," we will analyze each option provided and determine their correctness step by step.

### Step-by-Step Solution:

1. **Evaluate Option 1: Unit of Acceleration**
- Acceleration is defined as the change in velocity over time. The formula for acceleration (a) is:
\[ a = \frac{\Delta v}{\Delta t} \]
- The unit of velocity (v) is meters per second (m/s), and the unit of time (t) is seconds (s).
- Therefore, the unit of acceleration can be derived as:
\[ \text{Unit of acceleration} = \frac{\text{Unit of velocity}}{\text{Unit of time}} = \frac{m/s}{s} = m/s^2 \]
- Thus, **Option 1 is correct**: The unit of acceleration is meter per second squared (m/s²).

2. **Evaluate Option 2: Speed Equals Distance Upon Time**
- Speed (s) is defined as the distance (d) traveled divided by the time (t) taken. The formula for speed is:
\[ s = \frac{d}{t} \]
- The unit of distance is meters (m), and the unit of time is seconds (s).
- Therefore, the unit of speed is:
\[ \text{Unit of speed} = \frac{\text{Unit of distance}}{\text{Unit of time}} = \frac{m}{s} \]
- Thus, **Option 2 is correct**: Speed is equal to distance divided by time.

3. **Evaluate Option 3: Magnitude of Displacement**
- Displacement is a vector quantity that refers to the shortest distance from the initial position to the final position. The distance traveled can be greater than or equal to the displacement.
- Therefore, the statement "the magnitude of displacement made by a body is less than or equal to the distance traveled by the body" is true.
- Thus, **Option 3 is correct**: The magnitude of displacement is less than or equal to the distance traveled.

4. **Evaluate Option 4: All of the Above**
- Since we have established that all previous options (1, 2, and 3) are correct, it follows that:
- **Option 4 is correct**: All of the above statements are correct.

### Final Conclusion:
All options (1, 2, 3, and 4) are correct. Therefore, the correct answer is **Option 4: All of the above**.

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