Question and answer
A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train’s acceleration be described? A. The train’s acceleration is positive. B. The train is not accelerating. C. The train will come to rest in 6 minutes. D. The train’s acceleration is negative.
The train's is deccelarating in other words it is slowing down . it can be proven through the equation a = v - u /t = -15 / 240 = - 1 /16 ms^-2
Expert answered|jher000|Points 7423|
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Asked 6/22/2012 10:55:54 AM
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