What is the time rquired by a train of length of 350 m to cross an electric pole with a speed of 70m/s?

Options

A. 3 s
B. 3.5 s
C. 5 s
D. 10 s

Answer

To solve the problem of how long it takes for a train of length 350 meters to cross an electric pole while traveling at a speed of 70 meters per second, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Information:**
- Length of the train (Distance) = 350 meters
- Speed of the train = 70 meters/second

2. **Understand the Concept:**
- When a train crosses an electric pole, the distance it needs to cover is equal to its own length. Therefore, the distance to be covered is 350 meters.

3. **Use the Formula for Time:**
- The formula to calculate time when distance and speed are known is:
\[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \]

4. **Substitute the Values into the Formula:**
- Substitute the given values into the formula:
\[ \text{Time} = \frac{350 \text{ meters}}{70 \text{ meters/second}} \]

5. **Perform the Calculation:**
- Calculate the time:
\[ \text{Time} = \frac{350}{70} = 5 \text{ seconds} \]

6. **Conclusion:**
- The time required by the train to cross the electric pole is 5 seconds.

### Final Answer:
The time required by the train to cross the electric pole is **5 seconds**.

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