I can predict the motion of objects based on newton’s laws because

Answer;

Newton's laws models the motion of a body perfectly well.

The knowledge of the force acting on a body gives a good grasp of the resulting  motion.

There are three know laws of motion postulated by Newton;

 1st law; it states that an object will remain in its state of rest or uniform motion unless if it is acted upon by an external force.

 2nd law: it states that the acceleration of a body depends on the mass and force acting on it.

3rd law: it states that action and reaction are equal and opposite.

A sound understanding of these law's can help predict and model the motion of a body .

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explanation:

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle