You have warped brake rotors. Replacement or machine work is required to stop that condition.
If you only did the front brakes, the problem may be in the rear brakes.
Were the rotors resurfaced or replaced, or just the pads? Warped rotors are the most common cause of vibration when braking
Hey Marques==Either the rotors or the durms or both need to be turned. Goodluck Joe
Car brakes can cost quite a bit. Anywhere in the $100s I would say. Depending on your car and how many brakes you desire.
If it is an older car without ABS the brakes would lock up and the car would slide/push/unable to steer, unless you got on/off the brakes. With ABS the computer would pulse the brakes and would prevent lock up so you would be able to steer.
push in the clutch
New brakes for a vehicle depends on the type of car that you have. The more expensive the car, then the more the brakes would cost. For front brakes on a less expensive vehicle could cost anywhere between $40-150. The back brakes are higher.
Yes, but the entire braking system would need changed. It would be easier and cheaper to buy a car with ABS.
Cars vibrate.
yes
Yes.
Typically, a knocking noise when to use your brakes in the car is caused by your brakes wearing down. This means you need to get them checked out and repaired.