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If a ball is dropped from a balloon that is 640 feet above the ground and rising at a rate of 48 feet per second find the time the ball is in the air and the speed of the ball when it hits the ground?
Let v be the velocity when the ball is at 640 feets going downwards v = 48 feet /sec let the velocity with which it reaches the ground be u then, u2=v2+2gh g = acc due t ogravity in feet/sq.sec h = 640 feet the time taken to reach the ground = time to return to 640ft + the time to fall from there Time taken to get to the ground is 8 seconds. Final velocity is 208 feet per second downwards
If an object is thrown upward with an initial velocity of 32 feet per second from 40 feet above the ground write the height equation?
The height, in feet, above the ground at time t, H(t) = 40 + 32*t - 16*t2
What is integer to represent 40 floors above ground level?
To represent 40 floors above ground level with an integer, you would simply use the number 40. This integer indicates the specific floor number above the ground level, which is typically considered floor 0 or floor 1, depending on the building's numbering system. Thus, 40 directly corresponds to the 40th floor above ground.
An engineer on the ground is looking at the top of a building the angle of elevation to the top of the building is 22 degrees the engineer knows the building is 450 ft tall what is the distance?
If the engineer's eye is at ground level, then the distance to the point on the building underneath its highest point is 450/tan(22) ft. If the engineer was standing and his eyes were x ft above the ground, the distance is (450-x)/tan(22) ft.
The height h of a ball thrown into the air with an initial vertical velocity of 48 feet per second from a height of 5 feet above the ground is given by the equation?
At any time 't' seconds after the ball is released,until it hits the ground,h = 5 + 48 t - 16.1 t2
A tennis ball is dropped from 1.55 m above the ground It rebounds to a height of 0.824 mWith what velocity does it hit the ground?
31 m/s
A tennis ball is dropped 1.2 m above the ground With what velocity does it hit the ground before the ground stops it?
mgh = 1/2 * m * v^2 v = sqrt (2 * 9.8 * 1.2) v = 4.8 m/s [down]
A ball is dropped from the roof of a building The mass of the ball is 3.0 kg What is the potential energy of the ball in the instant that it is exactly 18.0 meters above the ground?
529.2 J
What form of energy did the ball have before it was dropped?
The ball had potential energy before it was dropped. This potential energy was due to its position above the ground.
What do you you need to know to determine how far a projectile travels horizontally?
initial velocity, angle of launch, height above ground When a projectile is launched you can calculate how far it travels horizontally if you know the height above ground it was launched from, initial velocity and the angle it was launched at. 1) Determine how long it will be in the air based on how far it has to fall (this is why you need the height above ground). 2) Use your initial velocity to determine the horizontal component of velocity 3) distance travelled horizontally = time in air (part 1) x horizontal velocity (part 2)
Can speed be a negative value?
No because you touch yourself at night.|_ 4 VV |_Just kidding. It does!Psyche!Actually, it does not because when your mother dropped you from 2 meters above the ground, you fell at a negative VELOCITY. Speed does not specify direction, and therefore can not be negative.
What are the advantages to building an above ground pool deck?
My contractor suggested I invest in an above ground pool deck rather than the usual. What is the benefit?
What is a lofty building?
lofty means high, so a lofty building is perhaps a building built high above the ground or maybe a skyscraper?
What height should dpc be above ground level?
According to Building Control Regulations, the DPC should be a minimum of 150mm above external finished ground level.
A projectile is fired horizontally from a gun that is 71.0 m above flat ground emerging from the gun with a speed of 250 ms What is the magnitude of the vertical component of its velocity as it st?
If it's fired horizontally, then its initial vertical velocity is zero. After that, the vertical velocityincreases by 9.8 meters per second every second, directed downward, and the projectile hitsthe ground after roughly 3.8 seconds.Exactly the same vertical motion as if it were dropped from the gun muzzle, with no horizontal velocity.
Describe a building?
a structure that is above ground in which a person/ people may live in work in
Is a cellar above or below?
A cellar (or basement) is below the ground level of a house or building.
