I guess this would be the Sun - or somewhere up. Aristotle also said that a heavier object will fall at a faster speed. Of course he never did any experiments to test these ideas. Why would you do an experiment? There would be some experimental error and so you really couldn't trust anything you found out anyway. Experiments just ruin all the fun. If you ask people around you, what will they say? I bet the will say one of the following answers:.
Why would people say the first answer? Remember that essentially all ideas are based on something. Even if they are wrong, they should make some sort of sense otherwise we would just be crazy person. The idea that a heavy object falls faster does seem to agree with our everyday observations. Try this. Take a baseball and a ping pong ball and drop them together.
It will probably be closer than you think but the heavier baseball will indeed hit the ground first. Your initial thoughts would be confirmed. Heavier things do indeed fall faster. Here is the first classic example. This is a bowling ball and a basketball dropped from the same height. Normally, I hold these two balls up in a classroom and ask students which will hit the ground first.
I never actually drop them because dropping a bowling ball on the ground from above your head might not be such a great idea. However, it does get the students excited that I might actually drop them. This year, the students convinced me to actually drop them. We went outside so I could drop them in the grass.
Other elements include velocity, the shape and surface area of the object, drag force, and the angle at which the object is thrown. When an object moves through air — or any other fluid — the substance resists against the movement.
The extent depends on many factors, but the experience is daily and familiar. When a person walks, air resistance almost does not affect and does not disturb them.
However, if the person extends their arm out of the window of a speeding car, they feel the air resistance, tangibly. Thus, speed, or velocity, is a determining factor in air resistance. Velocity and air resistance are proportional. Mathematically, sometimes it is proportional to the square of the velocity. Nonetheless, as velocity increases, so does air resistance. When an object is shot or thrown, at the first moment, it has the highest velocity and, consequently, experiences the highest air resistance.
The resistance pushes the object backward, or in other words, pulls it back. This pullback force is called the drag force. Drag has two components: one in the horizontal direction and one in the vertical direction. Depending on the angle of the movement, one component can be bigger than the other.
Therefore, gravity and drag both try to slow down the moving object, the first in vertical and the latter in a horizontal direction. Drag force in the thin air at high altitude, normal air, and in water is different. Gravity is a major player in the study of physical science. It is, of course, the force of gravity that causes objects to fall. One object always exerts a force of attraction on another object. This force of attraction is a pull, like the pull of gravity.
The larger an object is, the greater is the force of its attraction. Consider the fact that the sun, which is much, much larger than the earth, can, even at 90 million miles away, hold the earth and the other eight planets in orbit. The moon, on the other hand, is much smaller than the earth, and has only about one-sixth of the gravity of the earth.
Astronauts who have walked on the moon feel light and weightless because there is very little gravity holding them down. On the other hand, if they were to go to Jupiter, which has much more gravity than the earth, they wouldn't even be able to lift a foot off the ground.
It was Italian scientist Galileo Galilei who formulated the laws of accelerated motion and free-falling objects. He found that when an object is dropped and falls to the ground it has a falling rate of 9. You may wonder, then, why feathers float gently in the breeze instead of falling to the ground quickly, like a brick does. Introduction Richard Williams Physics.
Variables Many factors could affect the time that the paper takes to hit the floor, Surface area shape mass and gravity. Pulmonary tests I started with weighing the paper and assessing that it weighs 5. Evaluation The experiment went well and no mistakes where made all results where correct. Better results would have been achieved if I used a dropping point of more than 2m because I feel that 2m was not sufficient Richard Williams 10 B.
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