A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is

Options

A. accelerated
B. uniform
C. retarted
D. along circular tracks

Explanation

To solve the question, "A passenger in a moving train tosses a coin which falls behind him. It means that the motion of the train is," we can analyze the situation step by step.

### Step-by-Step Solution:

1. **Understanding the Scenario**:
- A passenger is inside a moving train and tosses a coin. The coin falls behind the passenger instead of going forward.

2. **Observing the Coin's Motion**:
- When the coin is tossed, it should ideally continue moving forward with the same speed as the train if there were no other forces acting on it. However, since it falls behind, this indicates that something is affecting its motion.

3. **Identifying the Forces**:
- The train is moving with some acceleration. When the passenger tosses the coin, it initially has the same forward velocity as the train. However, if the train accelerates forward after the coin is tossed, the coin will not accelerate with the train.

4. **Understanding Pseudo Force**:
- In the frame of reference of the train, which is an accelerating frame, a pseudo force acts on the coin in the opposite direction of the train's acceleration. This causes the coin to appear to fall behind the passenger.

5. **Conclusion**:
- Since the coin falls behind the passenger, it indicates that the train is accelerating. Therefore, the motion of the train is **accelerated**.

### Final Answer:
The motion of the train is **accelerated**.

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