Question

The derivation of 1st and 3rd law of motion using 2nd law of motion

Answer 1

Newton's first law of motion states that an object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied force. In other words, all objects resist a change in their state of rest or motion. In a qualitative way, the tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called inertia. This is why, the first law of motion is also known as the law of inertia. 
Example:We tend to remain at rest with respect to the seat until the driver applies a braking force to stop the motorcar.
Newton’s Third law motion: The third law of motion states that when one object exerts a force on another object, the second object instantaneously exerts a force back on the first. These two forces are always equal in magnitude but opposite in direction.Note: These forces act on different objects and never on the same object