A CAR STARTS FROM REST AT A CHECKPOINT A AND COMES TO REST AT THE NEXT

A CAR STARTS FROM REST AT A CHECKPOINT A AND COMES TO REST AT THE NEXT CHECKPOINT B,6KM AWAY IN 3 MINUTES.IT HAS FIRST A UNIFORM ACCELERATION FOR 40 SECONDS,THEN A CONSTANT SPEED AND IS BROUGHT TO REST WITH A UNIFORM RETARDATION AFTER 20 SECONDS.SKETCH A VELOCITY-TIME GRAPH OF THE MOTION.DETERMINE MAXIMUM SPEED AND RETARDATION.

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