How can a force change the state of motion of an object?

• The state of motion of an object is determined by its speed and direction of motion.
• The speed and direction of the motion of the object can be changed by applying force on it.
• For example, when a footballer kicks a moving ball in the same direction its speed increases or when a goalkeeper catches a ball, its speed is reduced to zero.

Therefore, we can say that a force can change the state of motion of the object by changing its speed or direction.