A car travels at a speed of 25 m/s for 8 hours. What is the distance (in km) travelled by the car?

Options

A. a. 360
B. b. 720
C. c. 450
D. d. 900

Answer

To solve the problem of finding the distance traveled by a car that moves at a speed of 25 m/s for 8 hours, we can follow these steps:

### Step 1: Convert the speed from meters per second to kilometers per hour.
The speed of the car is given as 25 m/s. To convert this speed to kilometers per hour, we can use the conversion factor:
\[ 1 \text{ m/s} = \frac{18}{5} \text{ km/h} \]
Thus, we calculate:
\[ \text{Speed in km/h} = 25 \text{ m/s} \times \frac{18}{5} \]
Calculating this gives:
\[ \text{Speed in km/h} = 25 \times 3.6 = 90 \text{ km/h} \]

### Step 2: Use the distance formula to find the distance traveled.
The distance traveled can be calculated using the formula:
\[ \text{Distance} = \text{Speed} \times \text{Time} \]
Here, the speed is 90 km/h and the time is 8 hours. Plugging in these values:
\[ \text{Distance} = 90 \text{ km/h} \times 8 \text{ hours} \]
Calculating this gives:
\[ \text{Distance} = 720 \text{ km} \]

### Final Answer:
The distance traveled by the car is **720 kilometers**.

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