0
A rocket is fired straight up It accelerates upward at 35 mss for 35 s then runs out of fuel Ignore any air resistance effects How long is the rocket in the air?
There are three phases to this calculation:
# The initial powered acceleration # The deceleration under gravity to the top of the trajectory # The acceleration under gravity back to the ground Using the equations:
a = 2(s - ut)/t2
a=(v-vo)/t
Phase 1
Acceleration (a) = 35m/s2
Time (t1) = 35s
Velocity(v) = 35 x 35 = 1,225m/s
Distance travelled (S1) = 21,437m
Phase 2
Acceleration (a) = -9.8m/s2
Initial Velocity (Vo) = 1,225m/s
Distance travelled (S2) = 76,562m
Time (t2) = 125s
Phase 3
Acceleration (a) = 9.8m/s2
Distance Travelled (St) = S1 + S2 = 98,000m
Time (t3) = 141.4s
Thus total time = t1 + t2 + t3 = 35 + 125 + 141.4 = 301.4s
What else can I help you with?
A ball is thrown straight up from the edge of the roof of a buildinga second ball is dropped from 1sec later ignore air resistance?
... and what is the question? The second ball should arrive at the floor a second after the first, both should have the same speed.
How many ways can 5 people stand in a strait line if Jessie is always third?
Not sure what a strait line is! Five people can stand in a straight line, with Jessie third in 24 ways if you ignore left-to-right and right-to-left "reflections".
How long would it take a water balloon to drop 200 feet?
if you ignore air resistance, it would take about 3.5 seconds; at ttat point where it hits the ground it is traveling at 75 mph. Because of the air drag, it may take a bit longer to hit the ground.
What do people do at a stop sign?
they ignore it. because they are stupid
What does the acronym IAR stand for?
The acronym IAR stands for Ignore All Rules. If a rule prevents your from improving or maintaining something you want to improve or maintaining you desire then ignore it.
What is one reason why businesses were able to ignore their effects on the environment for so long?
Bussinesses tend to view the effects of their activities as negligible and ignore them
A ball is thrown straight up from the edge of the roof of a buildinga second ball is dropped from 1sec later ignore air resistance?
... and what is the question? The second ball should arrive at the floor a second after the first, both should have the same speed.
What happens when two objects of different mass is thrown up. which will reach maximum height if both are thrown with same velocity?
If you ignore air resistance, then they will reach their maximum height at the same time. In order not to ignore air resistance, you would need to know their shapes.
How does wweight affect how things fly through the air?
If you ignore air resistance, weight has no effect at all.
If two bodies of different mass fall from same height will they reach at the same time?
Yes - but only if you can ignore air resistance, that is, if the objects fall for a sufficiently short time, and have a sufficiently high mass, and sufficiently small surface area, so that air resistance becomes insignificant.Yes - but only if you can ignore air resistance, that is, if the objects fall for a sufficiently short time, and have a sufficiently high mass, and sufficiently small surface area, so that air resistance becomes insignificant.Yes - but only if you can ignore air resistance, that is, if the objects fall for a sufficiently short time, and have a sufficiently high mass, and sufficiently small surface area, so that air resistance becomes insignificant.Yes - but only if you can ignore air resistance, that is, if the objects fall for a sufficiently short time, and have a sufficiently high mass, and sufficiently small surface area, so that air resistance becomes insignificant.
When a guys gazes at you is he mad?
no i dont think so,normally when someone is mad they just ignore you. your straight
What is formula of free falling object?
The formula for free-falling objects is d = 0.5 * g * t^2, where d is the distance fallen, g is the acceleration due to gravity (9.81 m/s^2), and t is the time the object has been falling. This formula assumes no air resistance.
What are the four weakness of the repricing model?
1.ignore market value effects 2.ignore off-balance sheet cash flows 3.over-aggregation 4.ignores run-offs
What does a strictly structured change process often ignore?
A strictly structured change process often ignores the ingrained human resistance to change.
What are schools doing to help prevent cannabis use among kids?
They are promoting programs that focuses on teaching children the negative effects of cannabis, and often ignore the positive effects of cannabis.
I am sick of attraction it effects my studies what can i do?
If you are sick of being attracted to someone, and it is effecting your studies, you need to try and ignore the person.
What is leakage resistance in RC circuit?
Leakage resistance in any circuit is resistance less than infinity where it is not expected, such as across an insulator. In the ideal sense, all circuits have leakage resistance because no insulator is perfect, but we usually ignore this except in special situations because it does not normally matter in real applications. In an RC circuit, leakage resistance would most typically be across the capacitor.
