All Questions
11
questions
2
votes
1
answer
43
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Trajectories of projectile based on different speeds of projection [duplicate]
So my teacher was teaching gravitation and an interesting fact that he mentioned was the trajectory of a projectile projected from Earth at a speed equal to escape velocity, is parabolic.
Also, he ...
- 21
1
vote
3
answers
88
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How does a mass ejected at escape velocity keep moving till infinity?
I've studied that if a mass is ejected from the surface of the Earth at 11.2 km/s (or at any point above the surface at a lower Ve), it 'escapes' to infinity.
Does that not imply a violation in the ...
- 93
1
vote
3
answers
106
views
Would a projectile launched with the escape velocity reach a final velocity of 0 as time approached infinity?
I just wanted to check my understanding of escape velocity.
If a projectile was to launch and have the exact velocity as the escape velocity of the earth,
it would have a final velocity of 0 correct?
...
- 51
0
votes
4
answers
177
views
What happens if a projectile is projected with escape velocity but not upwards?
This may be a dumb question, however I was confused with escape velocity and in the end determined that escape velocity is based off of energy, whereby (i think assuming air resistance and all that is ...
- 521
0
votes
1
answer
673
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Minimum Velocity for a projectile to leave the Earth
Let's say we have a cannonball that can shoot at various angles. How would we find the minimum velocity for this projectile to leave the Earth when the cannonball is shot at an angle $\theta$. I think ...
- 3
-1
votes
2
answers
225
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Escape velocity [duplicate]
I don't understand what escape velocity is. I know escape velocity from the earth is 11,186m/s. If a rocket is launched from the surface of the earth with initial speed of 11,186m/s, does it escape ...
- 1
-2
votes
1
answer
704
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What are the conditions for an orbiting satellite of the earth to escape into space? [closed]
I am confused whether the increase in its velocity is enough for it to escape.
Also, will the satellite escape if suddenly stopped moving in its orbit or fall back to the earth?
- 103
0
votes
1
answer
3k
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Escape velocity of the solar system?
I'm having a lot trouble with this problem. I need the minimum escape velocity for the (earth sun) solar system. I can't simply integrate the potential with respect to radius since this changes with ...
user86425
0
votes
3
answers
450
views
Why do we get 2 different answers for escape velocity, when we apply different laws to calculate it?
To measure the escape velocity, if I use the equation -
$$\frac{-GMm}{r^2}=\frac{v.dv}{dr} $$
and I put my final distance to be $\infty$ , then I get the answer,
$$u = \sqrt\frac{2GM}{R} \;. \...
- 1,770
2
votes
3
answers
7k
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Projectiles and escape velocity [closed]
Q: The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of $45^\circ$ with vertical, the escape velocity will be?
My ...
- 227
3
votes
1
answer
864
views
How long will it take for a bullet to reach a Geostationary orbit?
I'm curious to know this. Neglect air friction and imagine a bullet that were shot normal to the Earth's surface, from the Equator. I will have to consider the Coriolis effect and so I expect the path ...
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