document.write( "Question 1150099: a fx and a bus is 30 km apart from each other their initial speed is 288 kph and 342 kph each. if the acceleration of the bus is 2.0 m/s^2 and 3.0 m/s^2 for the other vehicle. how long is sec before both vehicle meet if they're travelling on the same direction \n" ); document.write( "

Algebra.Com's Answer #771466 by ikleyn(52803) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Acceleration  of 1 m/s^2 changes the instantaneous velocity from 0 m/s to 3600 m/s, i.e. from 0 km/h to 36 km/h.\r\n" );
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document.write( "So, the acceleration of 2 m/s^2 changes the \" fx \"  instantaneous velocity (I don't know which vehicle it is) \r\n" );
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document.write( "uniformly in time from 288 km/h to 288+72 = 360 km/h, with the average speed of   = 324 km/h.\r\n" );
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document.write( "Similarly, the acceleration of 3 m/s^2 changes the bus' instantaneous velocity \r\n" );
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document.write( "uniformly in time from 342 km/h to 342+108 = 450 km/h, with the average speed of   = 396 km/h.\r\n" );
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document.write( "In the given problem, it is ACCEPTABLE to replace accelerated moves by uniform moves with averaged speeds.\r\n" );
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document.write( "Therefore, the answer to the problem's question is   =  =  of an hour = 25 minutes.   ANSWER\r\n" );
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