Here's the breakdown:
* The vertical velocity component changes at a constant rate. This rate is due to gravity, which exerts a constant downward acceleration on objects near the Earth's surface.
* This constant rate is denoted by 'g', which is approximately 9.8 m/s². This means that for every second an object is in freefall, its downward velocity increases by 9.8 meters per second.
* The direction of the acceleration due to gravity is always downward.
Important Notes:
* Air resistance is not considered in this simplified model. In reality, air resistance can significantly affect an object's motion.
* The horizontal velocity component remains constant (ignoring air resistance) because there's no force acting horizontally on the object.
Examples:
* Dropping a ball: As a ball falls, its vertical velocity increases by 9.8 m/s every second.
* Throwing a ball upwards: The ball's initial upward velocity decreases by 9.8 m/s each second until it momentarily stops at its highest point. Then, it starts to fall, and its downward velocity increases by 9.8 m/s every second.
Let me know if you have any more questions!
