Respuesta :
The average velocity of a car that travels 450 km north in 9.0 h is 5.0 x 10 km/h
The average velocity of a car that travels 450 km north in 9.0 hours is 50km/h
In Physics, Average velocity / speed is defined as the change in position by distance over time.
Average speed is given as Total distance travelled / Total time taken
where distance travelled =450 km north
Time =9.0 hours
Average velocity ==450 km/ 9.0 hours
Average velocity =50km/h.
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