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What is the acceleration of a train that takes 22 seconds to go from a speed of 73 kilometers per hour to a speed of 45 kilometers per hour?

Respuesta :

Answer:

.354 m/s^2

Explanation:

Acceleration is change in velocity  divided by change in time

 (73 - 45 ) = 28 km / hr   velocity change   this is 7.778 m/s

7.778 m/s / 22 s  = .354 m/s^2

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