A chemical reaction is the rearrangement of the molecular or ionic structure of an element.
A nuclear reaction is a change in identity or characteristics of an atomic nucleus that is reacted when being hit with an energy particle extremely hard.
I believe it is nuclear reaction.
Newton's first law of motion is sometimes called the law of inertia. When the forces acting on an object are balanced, the object is either at rest or moving with a constant velocity. Unbalanced forces can cause an object to accelerate or decelerate. Unbalanced forces can also cause an object to change direction.
Answer:
how far an object moves in a certain amount of time
Explanation:
It is the 4th one that is correct and balanced
