Newton's Second Law of Motion

Newton's Second Law of Motion states:

* F = ma

Where:

* F is the net external force acting on an object

* m is the mass of the object

* a is the acceleration of the object

Key Points

* Acceleration is the rate of change of velocity: If an object is accelerating, its velocity is changing.

* Non-zero force implies acceleration: If the net external force acting on a particle is not zero, then the particle must be accelerating.

Conclusion

Therefore, if a net external force acts on a particle and this force is not equal to zero, it is sufficient information to conclude that the velocity of the particle is changing.