The time required for a stone to fall from a given height can be calculated mathematically. Time equals the square root of two times the distance divided by force of gravity. Time is in seconds, distance in meters, and the force of gravity on Earth is 9.8 meters/second ^2.
60 m/s
Both do have same meaning, in some countries. Window ledge or window sill is a flat horizontal surface of the window at the bottom side. However, a window ledge is more associated with the outside, while the window sill is more associated with the inside.Example: As Mrs. M. placed her potted violets on the sunny window sill, she noticed a man climbing out on the window ledge directly across the alley from her. Startled, she knocked one of the pots through the window, over the sill and out to the ledge, where it quickly rolled off the edge. The splat 10-stories below could barely be heard as she screamed to the man, "Stop! The ledge is not the answer to your problems!" But it turned out that the man's cat, who'd been asleep on the window sill, had gone out the unscreened window onto the ledge to chase a pigeon and the man was only trying to grab the cat before she fell. His cat, luckily, was saved; Mrs. M's potted violet, though, met a smashing demise.
The feather falls slower because it has air restistance. The air pushes up on it. The rock falls faster because it's mass and how it doesn't have air resistance. Also, because toilet seats produce a gas, reacting with the feathers on a feather, making the feather rise.
1/14 stone = 1 pound 1 stone = 14 pounds
1 kilogram = 0.16 stone
A stone that falls from a ledge and takes 8 second to hit the ground travels a distance of 313.6 meters. You can find this answer by substituting 8 seconds for time in the physics formula d = 1/2 x acceleration x (t squared), where d = distance, acceleration is given as a =9.8 meters/second squared, and t squared is time in seconds.
H = 1/2 g T2 = (4.9) (64) = 313.6 meters.H = 1/2g T2 = (4.9) x (8)2 = 4.9 x 64 = 313.6 meters
D. 36 m/s
H = 1/2 g T2 = (4.9) (64) = 313.6 meters.H = 1/2g T2 = (4.9) x (8)2 = 4.9 x 64 = 313.6 meters
The approximate gravitational acceleration on Earth is 9.8 meters per second. Neglecting air friction is s equals 4.9 times 16 squared. S is equal to 1254.4 meters which is equal to 4100 feet.
If a stone falls from a ledge and takes 16 seconds to hit bottom, then the bottom is 1413 meters away. This assumes acceleration due to gravity of 9.81 meters per second squared, an initial velocity of zero, and no friction due to air resistance. Air resistance will decrease the distance.x = 1/2 at2 + v0t + x0
92.2m/s
The vikings, on the top ledge
mt.cornet and in the survival zone on a ledge
She falls from a window ledge.
A 92.2 m/s V = (4 m/s) + (9.8 m/s²) (9 s) V = 92.2 m/s
Whether it has (gravitational) potential energy or not depends on what level you (arbitrarily) define as zero. If you define the bottom of the ledge as the "zero" level, then the top of the ledge will have positive energy. If you define the top of the ledge as the "zero" level, then the object on the top of the ledge will have zero potential energy (and at the bottom of the ledge it will have negative potential energy). In any case, at the top of a ledge, an object will have more potential energy than at the bottom of the ledge, because it requires work to push the object up; also, in principle the potential energy can be recovered (converted to some other type of energy) if the object falls down.