Respuesta :
The average velocity is 48 km/hr
Average velocity = Total distance covered / Total time taken
Time taken to travel the first 40 km = 1 h
Time taken to travel the next 20 km = 20km /(80 km/h) = 0.25 h
Total distance travelled = 40 + 20 = 60 Km
Total time taken = 1 + 0.25= 1.25 hr
Therefore,
Average velocity= 60 Km/ 1.25 hr
= 48 Km/hr
So, Average velocity of the car during this 40 km trip is 48Km/hr.
What is meant by average velocity?
Average velocity is defined as the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs. The average velocity can be positive or negative depending upon the sign of the displacement. The SI unit of average velocity is meters per second (m/s or ms-1).
Which is more important between average velocity and instantaneous velocity and why?
Average velocity tell us how fast an object is moving in a given interval of time, whare as the instantaneous velocity gives the velocity of the object at a particular instant of time interval
Learn more about average velocity:
brainly.com/question/1844960
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