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How long would a penny be falling if dropped off the Burj Khalifa?
Wiki User
∙ 11y ago
In a vacuum (i.e. neglecting air resistance) a falling object would reach a speed of about 124.2 m/s (278 mph) in falling 828 m. However, in an average configuration, a coin would reach terminal velocity at about 18.7 m/s (42 mph) and take approximately 45 seconds to reach the ground from 828 m. Edge on, it could reach 29 m/sec (65 mph) and be on the ground in just 31 seconds.
Note that you cannot drop a coin straight down, but would have to throw it outward a distance of at least 15 m (50 feet) to reach the ground.
*Base jumpers who jumped from the top of the building (2717 feet) took about 80 seconds to reach the ground including 10 seconds of freefall.
Wiki User
∙ 9y ago
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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.
What would happen if you dropped a penny into a black hole?
The penny will be gone. You will also be gone with it, because getting close enough to a black hole to drop a penny inside it will catch you in its gravity well.
Would a bowling ball and a penny hit the ground at the same time if dropped from an equal height?
Yes
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.
If there were no air resistance how did the speeds of a feather and a penny compare?
If there was no air resistance and a feather and a penny were dropped from the same height they would both pick up speed by the same amount and they would hit the ground at the same speed and at the same time.
Why would dropping a penny into a small cup at the bottom of a large fish tank be harder to do than it seems?
The penny will zig zag till it hits the bottom, the same way a a piece of paper would if you held it up and dropped it. It would be easier to drop a marble or a pebble.
If a penny dropped from a high distance would it kill you?
If it dropped from a high enough distance, it would if its terminal velocity were higher than the speed necessary to kill a person. Since coins are small and more aerodynamic, the terminal velocity would be higher than a larger, flatter object, making it sort of like a bullet. The weight of a penny would be a function of it's acceleration. If the penny is still, that acceleration would be that of gravity, more or less 9,8 m/s.s or 1 G. You take the mass of a penny (in kg) and multiply it by the acceleration (in m/s.s) to get the weight in Newtons (which is force). So, a falling penny would be going 9,8 m/s faster every second before reaching its terminal velocity. The main point is the final velocity will be very high since it's a small and for all practical purposes, an aerodynamic object and therefore the kinetic energy will be very high as well. So will the force, which depends on the acceleration and the Work, which will be the very high transference of energy from the penny to somebody's head.
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.
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
Who is the Italian scientist who studied falling objects?
Do you mean Galileo Galilei? The Italian guy who dropped things from the Leaning Tower to see what would hit the ground first?
Can a penny kill if dropped from Empire State Building?
No, a penny falling from the Empire State Building cannot kill a pedestrian. It is unlikely to even penetrate the skin of a pedestrian.When an object falls to earth it gains speed. It eventually gains so much speed that it doesn't accelerate anymore, this is called Terminal Velocity.If a human were to jump off a plane he would accelerate to his terminal velocity. If you take the mass of an average grown human, his terminal velocity would be about 100 something miles per hour. But the mass of a penny is only about 1 gram, so its terminal velocity would only be about 56mph. That means that the penny would accelerate to this speed and then it won't accelerate any more and it will maintain this current speed.You also have to take into consideration that on a building as high as the empire state building wind rushes up the sides so your measly little penny would simply be blown away.In the slim chance that it would hit a pedestrian, it would more than likely sting but he would be able to walk away and live another day. It is unlikely that the penny would even penetrate the skin of the human.Even though the urban legend might not be true, it's really not recommended that you try it out yourself. The Empire State Building authorities have always insisted that nobody has ever dropped such an item from the top of the building, although this cannot be confirmed.
Why would a feather dropped from the same height as an acorn fall to earth more slowly than the acorn?
feathers are believed to be of a lesser weight than that of an acorn neglegting air resistance and the influence of gravity on the falling objects. Consider: if both were dropped inside of a vacuum they would reach the earth at the same time.
