The physical quantity corresponding to the rate of change of displacement is

Options

A. speed
B. velocity
C. acceleration
D. retardation

Answer

To solve the question "The physical quantity corresponding to the rate of change of displacement is", we can follow these steps:

### Step 1: Understand the Definitions
- **Displacement** is defined as the shortest distance from the initial position to the final position in a specific direction. It is a vector quantity, meaning it has both magnitude and direction.
- **Distance**, on the other hand, is a scalar quantity that refers to the total path length traveled, regardless of direction.

### Step 2: Identify the Rate of Change
- The term "rate of change" refers to how a quantity changes over time. In this case, we are interested in how displacement changes over time.

### Step 3: Relate Displacement to Velocity
- The rate of change of displacement with respect to time is defined as **velocity**. Velocity is also a vector quantity, as it includes both speed (magnitude) and direction.

### Step 4: Conclusion
- Therefore, the physical quantity corresponding to the rate of change of displacement is **velocity**.

### Final Answer
The physical quantity corresponding to the rate of change of displacement is **velocity**.

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