odometer of a car reads 3000 km at the start of a trip and 3800 km at the end of a trip.if the trip took 4 hours . Calculate the avg. speed of the car in km per hour and m per sec
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avg. speed =3800-3000/4=800/4=200km/h
or
200×1000/3600 m/s=500/9 m/s
or
200×1000/3600 m/s=500/9 m/s
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2
the car travelled for 800 km in 4 hours
...so 800/4=200 km/h
...so 800/4=200 km/h
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