MLG JET BLAST BLOWS BAGGAGE CART INTO ANOTHER PARKED ACFT DURING TAXI FROM GATE AREA.

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ON SECOND LEG OF FIRST DAY WAS CONTACTED ON ACARS AND TOLD TO CALL FLT MGR UPON ARR AT DEST. AFTER LNDG; CALLED FLT MGR AND HE ADVISED THAT ON FIRST LEG OF DAY AS WE WERE DEPARTING GATE X AT ORD ON FLT ORD-DFW; WE BLEW A BAGGAGE CART INTO A PARKED AIRPLANE CAUSING SOME DAMAGE TO THE PARKED ACFT. I ADVISED THE FLT MGR THAT WE WERE PUSHED BACK FROM GATE 'TAILED TO THE N' (FACING S). UPON CALLING GND CTL WE WERE GIVEN A REVISED TAXI RTE WHICH REQUIRED AN INITIAL TAXI TO THE N. AS GATE X IS A GATE HIGH POTENTIAL FOR JET BLAST DAMAGE; I WAS VERY CAREFUL NOT TO ADD PWR ABOVE THE BREAKAWAY THRUST INDICES ON THE N1 GAUGE; AS WE WERE HVY AND IT WAS WARM OUTSIDE ACCOMPANIED BY AN UPHILL TAXI. I HAD TO LEAVE THE BREAKAWAY THRUST AT THE INDICES LONGER THAN NORMAL. I PROCEEDED PERPENDICULAR TO TXWY A AND BEGAN A R TURN N AS I APCHED TXWY A. I FEEL THAT THE HVY GROSS WT ACCOMPANIED BY THE WARM OUTSIDE AIR TEMP; UPHILL GRADE AND THE FACT THAT I HAD TO TURN N ON TXWY A INSTEAD OF S ALL CONTRIBUTED TO THE NEED FOR THE EXTENDED USE OF BREAKAWAY THRUST. THE ONLY SOLUTION I CAN THINK OF WOULD BE TO TOW ALL ACFT ONTO TXWY A BEFORE APPLYING THRUST.