please answer this immediately. I will give you a very good feedback.

3 Which principle explains why we need to wear seatbelts? * (1 Point) O Law of acceleration O Law of inertia Law of action-reaction O Law of conservation of motion\f4 The acceleration of an object is related to the net force exerted upon it and related to the mass of the object. * (1 Point) O directly, directly O inversely, inversely O directly, inversely O inversely, directly5 A classroom desk supported by long legs is stationary in the room. A teacher comes around and pushes upon the desk in an effort to start it into a state of motion. The desk does not budge. The desk remains at rest because * (1 Point) there are small dust mites at the O desk's feet that push back on the desk to keep it at rest O there is a force of kinetic or sliding friction opposing its motion O there is a force of rolling friction opposing its motion O there is a force of static friction opposing its motionIf the net force acting upon an object is 0 newton, then the object MUST (1 Point) O be at rest O be moving with a constant speed in the same direction O be accelerating be moving