Question

State Newton's first law of motion. show that the first law of motion can be mathematically state from the methematically expression of second law of motion

Answer 1

it states that every object remains in a state of rest or state of uniform motion unless it is compelled by an external unbalanced force.

according to second law,f=delta p/delta t

                                         f=0(in the absence of force)

                                         delta p/delta t=0

                                         delta p=0

therefore p is constant.

Answer 2

"A body remains at rest or continues to move with uniform velocity unless acted upon by an unbalanced force."                                                         This is called newtons 1st law of motion.