The average velocity for the whole journey if time taken is 3.3 hours is:

Question

A car travels 100 km east and then 100 km south. Finally, it comes back to the starting point by the south-east route. Throughout the journey, the speed is constant at 60 kmh^-1 . The average velocity for the whole journey if the time taken is 3.3 hours is:

A. 60 kmh^-1 

B. 90 kmh^-1

C. 0 kmh^-1

D. 180 kmh^-1

Answer 1

We know that, Velocity \(=\frac{Displacement}{Time\,taken}\)

 Now, Displacement = Final Position – Initial position 

Since, the car comes back to its starting point, so, displacement = 0 Therefore, Velocity = = 0 kmh^-1 

Hence, option C is correct