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A penny that was dropped hit the ground in 4.5 seconds what was the velocity of the penny?
Wiki User
∙ 12y ago
Simply use the expression v = gt
g = 9.8 m/s^2 and t given as 4.5 s
So velocity with which the penny hits the ground will be 44.1 m/s
Wiki User
∙ 12y ago
Sarmad Faredwn
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As a dropped penny falls toward the ground energy is converted to energy?
Since the penny was up and stationary before (in your hand or wherever), it had potential energy at first. When it's dropped, it is converted into kinetic energy (energy of motion).
How fast is terminal velocity for a penny if it is in a vacuum?
If the penny is in a vaccum, the penny has no terminal velocity because verminal velocity is when the resistance against the falling penny is equal to the force of gravity. So if it is in a vaccum, it has no forces resisting the fall, and it has no terminal velocity.
If i dropped a penny off an airplane and it hits your head can it kill you?
I say NO. If you mean it is dropped and falls vertically. Discover Channel's "Myth Busters" tried to determine if a bullet would kill you if it was fired directly vertical and falls on its own. The bullet or penny would fall at terminal velocity which is about 120mph. However, they will tumble which slows them down more. This velocity and their mass is not enough to kill you.
What will hit the ground first a pencil or penny?
There are many factors that can affect the time for these objects to drop. The height at which each object is dropped is a factor since the height is proportional to time. if the height at which these objects are dropped are the same, then the time for them to drop to the floor is the same. Since the acceleration due to gravity at sea level is 9.81 m/s^2 for all objects no matter the mass, both objects will accelerate at the same rate which means they will reach the floor at the same rate. All in all, both the pencil and the penny will hit the ground at the same time.
If you drop a penny and a quarter from the same position at the same time which one will hit the floor first?
Theoretically each will hit the ground at the exact same time. Practically, however, the distance from the drop position to the ground is a very impotant factor. If you drop both at a relatively short distance (say 5 feet) they will effectually hit at the same time if they encounter no wind resistance. If you drop them at a much higher distance (say 100 feet) the quarter will hit the ground before the penny. The reason being is resistance to the flat surface of the penny verses the quarter. Since the penny is much lighter than the quarter (a penny weighs 2.5 grams and a quarter weighs 5.67 grams) it will be affected to a greater degree by wind resistance that the much heavier quarter. You can liken it as to a feather being dropped. The feather will flip and twist and float as it slowly drifts down to the ground. The quarter being heavier will drop less reactivly and have a much straighter decent and therefore hit the ground sooner.
A penny at rest is dropped from the top of a tall stairwell what is the penny's velocity after it has fallen for 2 seconds?
it would be 7
If ramon is stnading on a balcony that is 112 feet above the ground and he throws a penny straight down with a vertical velocity of 96 feet per second how long will it take to hit the ground?
112/96 = 1. 16666-seconds
You drop a penny from a height of 16 feet after how many seconds does the penny land on the ground with work?
1second
If you drop a penny and a text book at the sametime. which one will hit the ground first?
If a penny and a text book were dropped in a vacuum then they will both hit the ground at the same time. This refers to Newton's laws. If they are dropped at the same time on earth then the text book would hit the ground first.
What would happen if you dropped a penny off the Empire State Building and it made it to the ground?
If you drop a penny off the Empire State Building, it falls at its own terminal velocity after falling about 200+ metres (that's a guess but it's around 200). A penny's terminal velocity is roughly half of a falling person's terminal velocity. A falling skydiver will reach a maximum of around 130mph, so a penny will fall at approximately 65mph.
Would a bowling ball and a penny hit the ground at the same time if dropped from an equal height?
Yes
As a dropped penny falls toward the ground energy is converted to energy?
Since the penny was up and stationary before (in your hand or wherever), it had potential energy at first. When it's dropped, it is converted into kinetic energy (energy of motion).
If you throw a penny off the sears tower how long will it take to hit the ground?
8.1 seconds
How fast is terminal velocity for a penny if it is in a vacuum?
If the penny is in a vaccum, the penny has no terminal velocity because verminal velocity is when the resistance against the falling penny is equal to the force of gravity. So if it is in a vaccum, it has no forces resisting the fall, and it has no terminal velocity.
a penny dropped from the top of the empire state building takes 9.2 seconds to reach the street what is the height of the building?
The height of the building at the 102nd floor is 381 metres. The penny is irrelevant.
A penny dropped from the top of the Empire State Building takes 9.2 seconds to reach the street What is the height of the building?
The height of the building at the 102nd floor is 381 metres. The penny is irrelevant.
If i dropped a penny off an airplane and it hits your head can it kill you?
I say NO. If you mean it is dropped and falls vertically. Discover Channel's "Myth Busters" tried to determine if a bullet would kill you if it was fired directly vertical and falls on its own. The bullet or penny would fall at terminal velocity which is about 120mph. However, they will tumble which slows them down more. This velocity and their mass is not enough to kill you.
