I've got this message from a friend..
"A fall from the fifth floor hurts as much as a fall from the tenth floor.
lesson? give it all.. it will hurt just the same.."
Well, I disagree.. According to the laws of physics, specifically about the free-fall motion, this is definitely not true.. y = y* + v*t - 1/2 gt^2 Consider y* as 15 meters from the ground to the fifth floor and 30 meters for the tenth floor. If this is a free fall motion, v* is equal to zero. We will consider the final velocity, which is v from v = v* - gt. Computing for the total time of travel, you'll set y to zero (to reach the ground). Obviously, the time of travel of the one from the tenth floor is longer than the total time of travel of the one from the fifth floor. Using v = - gt (v* = 0), the final velocity of the one from the tenth floor is greater than the one from the fifth floor. (Considering air drag, the values of velocities may decrease but still, the final velocity of the one from the tenth floor is greater than the one from the fifth floor.) Then considering Newton's third law of motion, the one with greater velocity will experience greater impact as it reach the ground. Greater distance from the ground = greater final velocity = greater reaction force the body will experience as it reach the ground. Therefore, a man that fell from the fifth floor has a greater chance of surviving than the man who fell from the tenth.
Lesson? Take time to know what will be the outcome of your actions. If you already know that you'll be hurt, stop and think for a while before going up another floor. Staying (going higher and higher) will just cause greater damage to yourself. Don't give your all, leave something for yourself. Be cautious as early as possible or you'll end up like the man that fell from the tenth floor. You may survive, but the fall will give you much impairment to the extent that you can't live normally anymore.
--Neory T. Mangaliman (2nd Year Engineering Student)
see? may connection ang physics sa love life! hahaha!
==I can't remember when I wrote this, but in Facebook, it was published on October 24, 2009.. I was taking Physics 2 that time under Sir Hermie Del Pilar.==
"A fall from the fifth floor hurts as much as a fall from the tenth floor.
lesson? give it all.. it will hurt just the same.."
Well, I disagree.. According to the laws of physics, specifically about the free-fall motion, this is definitely not true.. y = y* + v*t - 1/2 gt^2 Consider y* as 15 meters from the ground to the fifth floor and 30 meters for the tenth floor. If this is a free fall motion, v* is equal to zero. We will consider the final velocity, which is v from v = v* - gt. Computing for the total time of travel, you'll set y to zero (to reach the ground). Obviously, the time of travel of the one from the tenth floor is longer than the total time of travel of the one from the fifth floor. Using v = - gt (v* = 0), the final velocity of the one from the tenth floor is greater than the one from the fifth floor. (Considering air drag, the values of velocities may decrease but still, the final velocity of the one from the tenth floor is greater than the one from the fifth floor.) Then considering Newton's third law of motion, the one with greater velocity will experience greater impact as it reach the ground. Greater distance from the ground = greater final velocity = greater reaction force the body will experience as it reach the ground. Therefore, a man that fell from the fifth floor has a greater chance of surviving than the man who fell from the tenth.
Lesson? Take time to know what will be the outcome of your actions. If you already know that you'll be hurt, stop and think for a while before going up another floor. Staying (going higher and higher) will just cause greater damage to yourself. Don't give your all, leave something for yourself. Be cautious as early as possible or you'll end up like the man that fell from the tenth floor. You may survive, but the fall will give you much impairment to the extent that you can't live normally anymore.
--Neory T. Mangaliman (2nd Year Engineering Student)
see? may connection ang physics sa love life! hahaha!
==I can't remember when I wrote this, but in Facebook, it was published on October 24, 2009.. I was taking Physics 2 that time under Sir Hermie Del Pilar.==
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