nicoleteran131
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If a car is traveling at constant speed of 70 kilometers per hour, how many hours will it take for the car to travel a distance of 28 kilometers

If a car is traveling at constant speed of 100 kilometers per hour, how many hours will it take for the car to travel a distance of 280 kilometers ?

If the velocity of a caer changes from 0 meters per second to 100 meters per second in 10 seconds, what is the acceleration over that 10 second period?

If the velocity of a caer changes from 20 meters per second to 60 meters per second in 4 seconds, what is the acceleration over that 4 second period ?

Sagot :

Answer:

Explanation:

28 / 70 = 0.3857142...  = 0.39 hr

280 / 100 = 2.8 hrs.

(100 - 0) / 10 = 10 m/s²

(60 - 20) / 4 = 10 m/s²

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