A dog runs across the street to greet the mail man. The mail man is standing 10 meters west and it take the dog 2 seconds. What is the velocity of the dog? a 5m/s east b 20m/s west C 5m/s west d 20m/s

To calculate the velocity of the dog, we need to use the formula for velocity:<br /><br />\[ \text{Velocity} = \frac{\text{Displacement}}{\text{Time}} \]<br /><br />Given:<br />- Displacement = 10 meters (east)<br />- Time = 2 seconds<br /><br />Now, plug in the values:<br /><br />\[ \text{Velocity} = \frac{10 \text{ meters}}{2 \text{ seconds}} = 5 \text{ m/s} \]<br /><br />Since the dog is running towards the mail man who is west, the direction of the velocity is east.<br /><br />Therefore, the correct answer is:<br />a) $5 \text{ m/s}$ east