A car moving on a straight road is an example of:

Options

A. rotatory motion
B. rectilinear motion
C. oscillatory motion
D. periodic motion

Answer

To solve the question "A car moving on a straight road is an example of:", we can analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understand the Types of Motion**:
- **Rotatory Motion**: This type of motion involves an object rotating around a fixed point or axis. Examples include the motion of a spinning wheel or a rotating fan.
- **Rectilinear Motion**: This is the motion of an object moving along a straight line. It does not change direction and is characterized by a constant path.
- **Oscillatory Motion**: This motion involves an object moving back and forth around a central point. Examples include a pendulum swinging or a mass on a spring.
- **Periodic Motion**: This is a type of motion that repeats itself at regular intervals of time. Examples include the motion of a clock's hands or the swinging of a pendulum.

2. **Analyze the Car's Motion**:
- The question specifies that the car is moving on a straight road. This indicates that the car is traveling in a straight line without changing direction.

3. **Eliminate Incorrect Options**:
- **Rotatory Motion**: The car is not rotating; it is moving straight, so this option can be eliminated.
- **Oscillatory Motion**: The car is not moving back and forth; it is moving in a straight line, so this option can be eliminated.
- **Periodic Motion**: The car's motion does not repeat at regular intervals; it is simply moving from one point to another, so this option can also be eliminated.

4. **Identify the Correct Option**:
- Since the car is moving in a straight line, the only suitable option left is **Rectilinear Motion**. This type of motion perfectly describes the car's movement along the straight road.

### Final Answer:
The correct answer is **b) Rectilinear Motion**.

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