WHILE TRAVELING 70-80MPH I STARTED TO SLOW DOWN. AS I WAS SLOWING DOWN AT ABOUT 40MPH THE BRAKE PEDAL LIFTED MY FOOT UP. I THEN PRESSED HARDER ON THE PEDAL AND WAS UNABLE TO SLOW THE VEHICAL DOWN. FINALLY AFTER 2 SECONDS THE PEDAL WENT ALL THE WAY DOWN AND THE CAR SKIDDED OUT OF CONTROL. THE RIGHT FRONT WHEEL WAS DAMAGED WHEN THE CAR WENT UP A CURB. NO OTHER DAMAGE WAS NOTICED. I, THE DRIVER, WAS THE ONLY ONE IN THE CAR. I HIT MY HEAD ON THE SIDE WINDOW DUE TO IMPACT ON CURB.