Because there is gravity that why we stay on the ground and not fly in the sky.
The acceleration of the object would still be g downward, regardless of the angle at which it is thrown upward. The acceleration due to gravity always acts in the downward direction towards the center of the Earth. The only difference would be the horizontal component of the velocity due to the initial angle of the throw.
As an object falls, its potential energy (PE) decreases due to the force of gravity pulling it downward. This decrease in PE is accompanied by an increase in kinetic energy (KE) as the object gains speed from its downward motion. Thus, energy is converted from PE to KE as the object falls.
The largest variation from two objects moving downward either 'dropped' or 'thrown' thereby allowing earth's natural gravity to increase until an object approaches and/or reaches maximum velocity. The difference in the two examples, 'dropped' or 'thrown' objects merely illustrates that the "thrown" object will reach maximum velocity quicker than the 'dropped' object.
From the time the object leaves your hand, its acceleration doesn't change at all ... it remains constant at 9.8 meters (32.2 feet) per second2 downward. Well, we have to admit that the acceleration does change to zero once the object hits the ground.
It will decrease if the object moves upward; decrease if the object moves downward.
The displacement vs. time graph for an object thrown downward from a cliff is a curved line that starts at the initial height and slopes downward. As time progresses, the slope of the graph becomes steeper, reflecting the increasing speed of the object due to gravitational acceleration. The curve is concave upward, indicating that the object is accelerating as it falls. Overall, the graph illustrates a non-linear relationship between displacement and time.
The acceleration of the object would still be g downward, regardless of the angle at which it is thrown upward. The acceleration due to gravity always acts in the downward direction towards the center of the Earth. The only difference would be the horizontal component of the velocity due to the initial angle of the throw.
As an object falls, its potential energy (PE) decreases due to the force of gravity pulling it downward. This decrease in PE is accompanied by an increase in kinetic energy (KE) as the object gains speed from its downward motion. Thus, energy is converted from PE to KE as the object falls.
The largest variation from two objects moving downward either 'dropped' or 'thrown' thereby allowing earth's natural gravity to increase until an object approaches and/or reaches maximum velocity. The difference in the two examples, 'dropped' or 'thrown' objects merely illustrates that the "thrown" object will reach maximum velocity quicker than the 'dropped' object.
From the time the object leaves your hand, its acceleration doesn't change at all ... it remains constant at 9.8 meters (32.2 feet) per second2 downward. Well, we have to admit that the acceleration does change to zero once the object hits the ground.
It will decrease if the object moves upward; decrease if the object moves downward.
When the upward and downward forces on a falling object are equal, the object reaches terminal velocity. At terminal velocity, the object stops accelerating and falls at a constant speed.
When an object falls, the main forces acting on it are gravity (pulling it downward) and air resistance (opposing its downward motion). In the absence of other factors, these two forces are the primary influences on the object's falling motion.
Whether the object is dropped, thrown downwards, thrown upwards, or thrown horizontally, its downward acceleration is the same 9.8 meters per second2. If it's thrown downwards, however, its speed at any instant is greater than the speed at the same instant would be if it had only been dropped, since it has some speed before the acceleration begins.
And what makes you think an object would fall, or should fall, precisely at such a speed? How do you get that number? - Anyway, that's not the way our Universe works. Without air resistance, an object that falls downward falls faster and faster - its speed increasing by 9.8 meter/second every second. With air resistance, a falling object will eventually reach a speed at which friction (air resistance) balances the downward force of gravity. This speed is different for different objects.
The object that does work on the rock as it falls is called the force of gravity. Gravity pulls the rock downward toward the center of the Earth, causing it to accelerate as it falls. This force is a result of the gravitational attraction between the rock and the Earth.
An example of a force that causes an object to change position is gravity. When an object is dropped, the force of gravity pulls it downward, causing it to change its position as it falls.