The stopping force is the force required to bring an object to a complete stop. It can be calculated by multiplying the mass of the object by its acceleration.
Momentum is directly proportional to the stopping force. This means that the greater the momentum of an object, the greater the stopping force required to bring it to a stop.
Stopping distance refers to the distance an object travels while it is being brought to a stop. Stopping time, on the other hand, refers to the amount of time it takes for the object to come to a complete stop. They are related by the equation: stopping distance = stopping time x velocity.
Friction is a force that acts in the opposite direction of an object's motion. It can decrease the stopping force by reducing the acceleration of the object. However, it can also increase the stopping distance by causing the object to slide or skid.
Yes, the stopping force can be negative if the object is accelerating in the opposite direction of its motion. This can happen if the object experiences a force in the opposite direction, such as a car's brakes failing while going downhill.