Homework Help: Physics

Posted by John on Wednesday, February 15, 2012 at 6:56pm.

Locomotive exert on a 12560-kg boxcar to make it accelerate forward at 0.38 m/s2. How long will it take the boxcar to reach its cruising speed of 112 km/h (69.6 mph or 31.1 m/s)?

Physics - bobpursley, Wednesday, February 15, 2012 at 7:33pm
vf=at

t= vf/a=31.1/.38 sec

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