MECHANICS

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CARS A 7B ARE 60 M APART TRAVELLING RESP AT THE CONST SPEED OF 32 AND 24 KPH ON AN ICE COVERED ROAD .KNOWING THAT 45 SEC AFTER DRIVER APPLIES HIS BRAKES TO AVOID OVERTAKING CARB ,THE 2 CARS COLLIDE DETERMINE UNIFORM DECELLERATION OF CAR A
RELATIVE VEL OF CARA WRT CARB WHEN THEY COLLIDE

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