Question

How many seconds does Puja take to cover a distance of 500 m, if she runs at a speed of 30 km/hr?

• A. 60 sec.
• B. 82 sec.
• C. 95 sec.
• D. 100 sec.

Hint:

To convert speed from km/hr to m/s, multiply by \( \frac{5}{18} \).

Answer 1

The Correct Option is A

Given: - Distance = 500 m - Speed = 30 km/hr First, convert speed into meters per second: \[ 30 \text{ km/hr} = \frac{30 \times 1000}{3600} \text{ m/s} \] \[ = \frac{30000}{3600} = 8.33 \text{ m/s} \] Now, using the formula: \[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \] \[ = \frac{500}{8.33} \approx 60 \text{ sec} \]
Thus, the correct answer is 60 sec.