# Questions tagged [projectile]

This tag is for questions relating to projectile, object moving through space due to the exertion of a force. The path of a projectile is called its trajectory.

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### Why does a falling bullet tend to land sideways?

I just saw the Veritasium video, The Fatal Physics of Falling Objects. At around 16:30, it's said that a falling bullet would start tumbling and likely land on it's side. Adam Savage says that the ...
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### Im a new student finding a few difficulties with velocity, I was hoping someone here could help with this problem [closed]

A stone is thrown vertically upwards with velocity 40m/s at the edge of a cliff having a height of 110m. Neglecting air resistance, compute the time required to strike the ground at the base of the ...
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### Physics question on 1D motion [closed]

could someone please help me solve this problem? I can't seem to get the right answer :( A ball thrown up from a rooftop of height 40 m lands on the ground in 4.8 s. a) What is the maximum height ...
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### Does a slow moving object fall faster than a fast falling object?

If I have understood it correctly, air resistance is proportioal to the squared speed of an object, meaning that the faster the object is going the more affected by air resistance it is ( which must ...
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### Coriolis force effect on freely falling body

If an object is let to fall freely from a tower of 100 meters, then it will get deflected towards East. Now clarify that if an object is allowed to fall freely from a rocket at 100 meters height. Does ...
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### Trying to estimate the path of a projectile with equations on graphic calculator. Need help

When a projectile is released with a very high velocity, it will not follow basic projectile motion because the Earth’s curvature will hinder those equations. In a crude sense, the Earth will curve ...
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### Why do my equations say that an object thrown at $30^o$ with velocity 30 m/s has a $y$ velocity of 15 m/s? [closed]

I don't know if I have stumbled upon a genuine truth, or if I'm doing something very wrong. But here is my problem: I am modelling the 2D trajectory of an object with constant acceleration using ...
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### Projectile motion as realistic as possible (at least computationally)

I want to know how would one set up the equation of motion of a projectile, that takes the most effects into account as possible (such as air resistance, lift, the projectile's extension, Earth's ...
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### In theory, how fast could I possibly serve in a game of ping-pong?

A tennis player can serve in a more or less straight line from their racket to the service box on the other side of the net: there's a direct line of sight. That means that there's no inherent limit ...
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### General relativity in layman’s terms (doubt)

I’m a high school student. I was reading a PhD thesis by Rickard Jonsson about visualising general relativity. Fig. 2.11 explained the motion of an apple thrown up into the sky by saying that it’s not ...
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### Effect of height on artillery range

Extra height for artillery is greatly prized in military tactics. As I understand it maximum range neglecting air resistance is always achieved by firing at a 45 degree angle. So what is the increased ...
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### Lt. Joe Kenda's expertise(?) in fundamental physics

I may have gotten confused due to advanced age, but I heard Joe Kenda on the TV show "Homicide Hunter" make a statement that left me befuddled and in doubt. Of course, the lieutenant has ...
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### Physics of tennis hit

If one takes notice the tennis players hit the ball on the right corner that way: Their last step before the hit is on the right foot, then they hit and then their left foot goes up in the air about ...
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### A rubber ball gets thrown horizontally from $H$ height find the horizontal distance of the ball till it hits the ground [closed]

There's a rubber ball that has mass $m$, it gets thrown horizontally (from $H>0$ height) with initial velocity of $\vec V(0) = V_0 \hat X$ ($\hat X$ is the axis, meaning horizontal) in addition to ...
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### Determine path of golf ball

All the below is based on the paper the physics of putting from A.R. Penner. The goal is to determine the path of a golf ball. A golf ball is launched with velocity 𝑣 and a launch angle of 𝛽 towards ...
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### Generalized projectile motion [closed]

Toss an object from the surface of earth at speed $V_1=\sqrt{MG/R}$. Here $R$ is the radius of the earth and $M$ is the mass of the earth and $G$ is universal gravitational constant. How long will it ...
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### Can a small amount of super-compressed gas cause much cooling upon rapid expansion and contact? [closed]

Generally, a small amount of mass in the range of $0.001$ - $0.01$ kg, even if chilled to tens of degrees below absolute zero in a hypothetical case to test extremes, even with 5000 specific heat and ...
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### Projectile with air resistance analysis

If a projectile is thrown neglecting air resistance, then the horizontal distance covered by it in ascent and descent is same. if we consider air resistance, then i want to compare horizontal distance ...
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### How can I approximate a character's jump in terrestrial circumstances in 2 dimensions?

I'd like to start with the 2-dimensional case to establish simple algorithms for an engine in a simulated environment to approximate physics of a human-sized character jumping long distances with ...
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### Is the drag force to raindrops at the terminal velocity quadratic or linear?

Air drag is approximated by the following equation $$F=\frac12 \rho A v^2 C_D$$ Depending on the drag coefficient $C_D$, this force may be linear or quadratic with respect to velocity $v$. If $v$ is ...
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### Equation of motion with air resistance

If I search for air resistance on a falling object, I find texts stating that it is proportional to the velocity. $$F=mg-kv$$ Is this accurate or approximate? Some texts say that when the speed is ...
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