Jerks backward uncontrollably
My 1998 Corona Exiv rolls for a bit when in reverse, then stops suddenly even though the accelerator is still depressed. It eventually jerks backward uncontrollably for a few meters. Then responds to the brake pedal being depressed. This problem doesn’t occur when the car is in Drive.
This sounds to me like a transmission related issue. The first thing to check would be the transmission fluid level.
If the fluid level is low, top it off and retest several times. While checking the fluid if the color appears dark or burnt looking it may be too late. Burnt color fluid is an indication of worn internal material.