Question

What is Newton's first law
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Answer 1

when a body at rest it remain at rest on a body in motion at remain in motion until we compelled any external force on it

Answer 2

1. NEWTON’S FIRST LAW:

NEWTON’S FIRST LAW OF MOTION, also commonly referred to as the LAW OF INERTIA, states that an object at rest tends to stay at rest until acted upon by an unbalanced force.

If the RESULTANT FORCE ACTING on a PARTICLE IS ZERO, the particle WILL REMAIN AT REST (if originally at rest) or will move with CONSTANT SPEED in a straight line (if originally in motion)

OR

First law :- Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

As per this law, an object will tend to/will continue to move in a path with same velocity until some external force/agency try to bring a change by their influence.