Question

Amoving body on earth ordinary comes to rest by itself because of the

Answer 1

hey mate here is the ans

a body remains in state of rest or motion until acted upon by external force
a moving body on earth ordinarily comes to rest by itself because of the frictional force and
air resistance Which acts on the object in the direction opposite to the direction of motion of the body

hope it helps you
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Answer 2

first of all it does not come to rest by itself keeping in view Newton's law of inertia or in simple words Newton's first law of motion (so correct the statement)......now the point is that, according to sir Isaac Newton that if no unbalanced force acts on on a body then the body will keep it's state of motion - in simple words if a book is on table it will keep it's position until some external force acts on it or if an asteroid is in space then it will simply keep moving because of no external force acting on it.....

If this is the case then why a body eg a cricket ball comes to rest by itself.....if the ball comes to rest after being in motion then certainly acceleration or more accurately deceleration is being produced in the ball which is due to an external force keeping in view Newton's second of law of motion so certainly there is a force acting on this cricket ball......so the force acting in here is due to the roughness of two forces and is called resistance force more precisely force of friction.......so bingo Newton's laws do apply on the ball and the ball does not come to rest by itself,it is due to the force of friction.....