2006-12-20 09:54:46 · 5 answers · asked by em. 1 in Science & Mathematics ➔ Physics
60N.
Terminal speed means that there is no change in velocity anymore, so acceleration is zero.
Since the air resistance and weight of the object balance out to create a net force of zero (based on the rule that F=ma), air resistance must be 60N up.
2006-12-20 10:03:03 · answer #1 · answered by Warhammerkid 1 · 1⤊ 0⤋
The answer is 60 N. At terminal velocity, there is no acceleration, which means that there is zero net force. Since there are only two forces involved, gravity and drag due to air resistance, the two must be equal and opposite so as to cancel each other out. Since we know that the force of gravity is 60 N, we know that the air resistance must also be 60 N.
To be technically correct, we should include signs on the forces, The force due to gravity is -60 N. The force due to air resistance is 60 N.
2006-12-20 10:10:40 · answer #2 · answered by David H 4 · 1⤊ 0⤋
A. The air resistance that acts on a ninety 5 N bag of nails that falls at its terminal velocity is ninety 5 N. whilst an merchandise is falling at its terminal velocity, the upward tension (air resistance) is comparable to the downward tension (gravity) . whilst this occurs, there'll be no extra suitable acceleration. The bag of nails will fall at a consistent velocity. B. 25,000 N x 4 engines = a hundred,000 N of finished thrust tension. F = ma F /m = a a hundred,000 N / 330,000 kg = a nil.303 m/s2 = a
2016-12-11 13:06:01 · answer #3 · answered by mcdonnell 4 · 0⤊ 0⤋
At terminal speed, weight equals air resistance, reducing acceleration to zero, so speed remains constant.
2006-12-20 12:17:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Force equals mass x acceleration
You know the acceleration is exactly enough to counter gravity or in other words 9.8 ms^2
Shouldn't be too hard from there to work it out.
;-)
2006-12-20 09:59:17 · answer #5 · answered by teef_au 6 · 0⤊ 0⤋