Why is there a Gringing in front brakes on 1995 ford pu f150?

A grinding, snapping or dragging sound coming from breaks can be a sign that new breaks need to be put on. if the brake pads have been used after being worn out the rotors can become grooved and even warped

I have a 1995 f150 and I had a grinding noise and it was the front wheel bearings. not a hard job if you have the manual for the truck and bearings are fairly cheap. if it's more of a squeeling then it's the answer above.