if we throw upward a ball with speed x. What can we say about it when the ball returns in the presence of air resistance? What about in the absence?
itsme1 said:if we throw upward a ball with speed x. What can we say about it when the ball returns in the presence of air resistance? What about in the absence?
Air resistance is the force exerted by the air on a moving object. In free fall, the object is falling without any external forces acting on it besides gravity. Air resistance slows down the object's acceleration due to gravity, causing it to fall at a slower rate.
The shape and size of an object can greatly impact the amount of air resistance it experiences during free fall. Objects with a larger surface area, such as a feather, will experience more air resistance than objects with a smaller surface area, such as a rock. Additionally, objects with a streamlined shape, like a pencil, will experience less air resistance than objects with an irregular shape, like a crumpled piece of paper.
The amount of air resistance an object experiences during free fall can be affected by several factors, including the object's shape and size, the density of the air, and the speed at which the object is falling. Other factors such as temperature, humidity, and air pressure can also play a role in the amount of air resistance experienced.
Air resistance acts in the opposite direction of the object's motion, so it can slow down the object's speed during free fall. As an object falls, it accelerates due to gravity, but as air resistance increases, the object's acceleration decreases. At a certain point, the force of gravity and the force of air resistance will balance out, causing the object to reach a terminal velocity, or a constant speed at which the forces are equal.
No, air resistance cannot be completely eliminated during free fall. The only way to remove air resistance is to eliminate the medium of air, which is not possible on Earth. However, the effects of air resistance can be minimized by reducing the surface area and streamlining the shape of the falling object.