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A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?Express the velocity to two vital numbers and include the appropriate units.

d = r*t

r = d/t

r = 150 km/7200 sec

r =~ 0.0208333 km/sec

The given conditions here are: Distance = 150 km Time = 7200 s Speed =? To express the velocity in appropriate models, in this given we can simply kilometer to meter which is the SI unit for distance. Hence, we do the conversion first.

1. Conversion 150 km = m? 1 km = 1000 m 150 km x 1000 m / 1 km = 150, 000 m

2. To find velocity, we drive the formulation d = vt where v = swiftness or speed to v= d/t

V = d / t

V = 150, 000m / 7200 s

V = 20.83 m/s

Hence, 20. 83 m/s is the swiftness.

**External links：**

https://en.wikipedia.org/wiki/Travel

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