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We know that S=ut+.5gt*t

here s=84m

g=9.8m/s*s

u=0

hence time is 4.14secs.

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What is the velocity of a stone dropped of a building 318 meters?

Ignoring any effects due to air resistance, the speed of the stone is zero at the instant it's dropped, and increases steadily to 78.98 meters per second when it hits the ground. The velocity is directed downward throughout the experiment.


Will a baseball or basketball reach the ground first?

If dropped from the same height (a few meters), they would appear to hit the ground at the same time, according to the experiments of Galileo. However, this neglects air resistance on the basketball, which will slow it down more and cause it to hit the ground later (very slightly later). The baseball, which has a smaller area and therefore less air resistance, will hit the ground first.


THow high is the building if the time it takes for a lead weight dropped from the top of the building to fall the last 1.5 m before hitting the ground is 109s?

For the last 1.5m:s = ut + (1/2)at21.5 = ut + (1/2)*10*(109)21.5 - (1/2)*10*(109)2 = u * 109u = -545 ms-1It seems that for this situation to even exist, the lead weight must start going upwards from 1.5m at a speed greater than the speed of sound. This cannot happen if it's dropped off a building, obviously.For the situation to be believable, the time would have to be much shorter, or the distance much larger.


What is the velocity of a ball that has a 3.03 second hit to the ground?

If it was thrown horizontally or dropped, and hit the ground 3.03 seconds later, then it hit the ground moving at a speed of 29.694 meters (97.42-ft) per second. If it was tossed at any angle not horizontal, and hit the ground 3.03 seconds later, we need to know the direction it was launched, in order to calculate the speed with which it hit the ground.


Would feather and a nail reach the ground at the same time?

No, a feather and a nail would not reach the ground at the same time if dropped at the same height in a vacuum. This is because the feather experiences more air resistance, slowing its fall compared to the nail which falls faster due to its higher mass.

Related Questions

How far in to the ground would a quarter go if you dropped it off the Empire State Building?

6 feet


What would be the change for a 10 gram object dropped from a 20 meter building if it takes 2 seconds to reach the ground?

There is no reason for the object to change.


What is the velocity of a stone dropped of a building 318 meters?

Ignoring any effects due to air resistance, the speed of the stone is zero at the instant it's dropped, and increases steadily to 78.98 meters per second when it hits the ground. The velocity is directed downward throughout the experiment.


If you dropped a gold brick from a building would it brake?

No


How far from a 6 storey building to the ground?

The height of a 6-storey building can vary depending on the design and purpose, but a typical storey is about 3 to 4 meters (10 to 13 feet) tall. Therefore, a 6-storey building would generally be around 18 to 24 meters (approximately 60 to 80 feet) tall from the ground to the top.


What would happen if you dropped a coin off the Empire State Building?

it would hit the ground, even if it hit some one the terminal velocity of a coin is not enough to kill them, it would just hurt like hell.


How many seconds does it take for a volleyball to hit the ground from feet in the air?

The time it takes for a volleyball to hit the ground when dropped from a height depends on the height it falls from. Using the formula for free fall ( t = \sqrt{\frac{2h}{g}} ), where ( h ) is the height in meters and ( g ) is the acceleration due to gravity (approximately ( 9.81 , m/s^2 )), you can calculate the time. For example, if dropped from 2 meters, it would take about 0.64 seconds to hit the ground.


What would you measure a building in meters kilometers centimeters or millimeters?

Meters.


How long would it take for an object dropped from 54.6 meters to hit the ground?

D = 1/2 g T2T = sqrt(2D/g) = sqrt( 109.2 / 9.8 ) = 3.335 seconds(rounded)


Would a hamster die if it was dropped off the empire state building?

Yes, a hamster would likely die if it were dropped off the Empire State Building. The impact from such a height would generate a force greater than the hamster's body could withstand, resulting in fatal injuries upon impact with the ground. Additionally, the high velocity of the fall would contribute to the severity of the impact, further increasing the likelihood of death.


Would you measure a building in meters?

Yes or in yards


Why would you measure a building in meters?

Because you ran out of yards?