What is an effect of increasing velocity on a moving body according to Isaac Newton's laws?

The statement that increasing velocity on a moving body according to Isaac Newton's laws implies that the body's state will remain unchanged unless acted upon directly relates to the first law of motion, often referred to as the law of inertia. This law asserts that an object will maintain its state of rest or uniform motion in a straight line unless acted upon by a net external force. Therefore, if no such force is applied to a body in motion, it will continue moving at a constant velocity. This principle explains why the body will not spontaneously change its velocity — it requires an external force to alter its state.

In contrast, other options may imply misunderstandings of Newton's laws. For example, the notion that a body will tend to slow down or change its motion unexpectedly does not align with the concept of inertia, as a body in motion will not slow down or change its direction without an external influence. Similarly, asserting that the body must always accelerate misrepresents the concept of motion under Newton's framework since an object can maintain a constant velocity (which includes zero acceleration), provided no net forces are acting upon it.