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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1 answer
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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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Velocity at a given time with known force, drag, area and mass

I am trying to plot the speed of an object of known mass, area and drag coefficient in a given density of fluid. I have correctly calculated the terminal velocity by $$v_t=\sqrt{\frac{2[Force]}{\rho[...
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Basics | Does the velocity in throwing direction change [closed]

Disregarding air resistance. The mass of the ball is centered, not inequally distributed, it can be seen as one mass point for this question! The ball is thrown on earth, just to be exact. When ...
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When the acceleration is a function of speed

Sometimes we see that the acceleration is expressed as a function of speed, for example, an air friction model: $$a=-kv\mp g$$ and the direction of speed is considered the positive direction. I find ...
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The effects of air resistance on the maximum height of a ball in the air [closed]

I want to assume a situation where a ball is launched vertically into the air at a 90° angle. Assume that it is on a non-moving ground surface (flat earth) and there is no air flow. I know that the ...
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Is there a difference in drag force from air when going into a front tuck?

The long jump is a track and field event in which athletes attempt to jump as far as possible from a take-off point into a sandpit. Athletes and gymnasts will often independently discover the fact ...
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What is the problem in my equation? [closed]

Consider the following hypothetical scenario- We are standing on the ground and throwing an object in the sky, whose initial velocity $\vec{v}$ makes an angle of 60 degrees with the horizontal, i.e, ...
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1 answer
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Can i calculate the initial speed and angle nedeed to reach a specific point with an specific angle?

I am trying to build an intelligent ball launcher that can recognize the target and measure its position, so for the control system I want can manipulate the initial velocity and angle, but I failed ...
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1 answer
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Graph of the path of a projectile weirdly showing two separate lines [closed]

Ok, so I basically just plotted the path of a projectile (simple oblique projection, ignoring air resistance). After a while, an idea crept into my mind and I got to it: Make the graph more dynamic by ...
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2 answers
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Angle of projection for the minimum time of flight for a given range

If a projectile has to cover a fixed range under gravity, then what should be the angle of projection for the total time of flight to be minimum? The initial and final point of the projectile are both ...
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Why does my equation for ballistic trajectory not work?

Recently I have been working on the problem of calculating a ballistic trajectory. I landed on the following equation: $y = tan(θ)x - gt^2 $, where $θ$ is the launch angle, $x$ is the distance ...
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Motion of a projectile in a rotated coordinate system, and converting equations to the new system

Context: This in essence is explained on Mathematics of Classical & Quantum Physics by Byron & Fuller. This is from Section $1.4$, pages $12-13$. So, suppose we launch a projectile (mass $m$) ...
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Kinematics constant acceleration problem [closed]

A stone is being thrown vertically upward with a speed of 12.5m/s from the edge of a cliff 75.0m high, what’s the total distance did it travel? It is a constant acceleration kinematics problem, I ...
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Calculate Angular Velocity (Spin) From Trajectory Parameters

I am trying to determine (roughly) the RPMs of a tennis ball based on it's trajectory parameters. I have Vo (initial velocity), ø (trajectory angle from horizontal), d (total distance travelled), t ...
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Why Time of ascent and descent is equal (taken air resistance negligible)?

Time of ascent = Time of descent. My question is, In case of time of ascent gravitation pull is not favouring the motion (retardation occuring) but in case of time of descent gravitation pull is ...
-1 votes
1 answer
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Projectile acceleration with quadratic drag and coriolis force [closed]

I'm wondering if this equations for the acceleration of a projectile in the x, y and z directions are correct, if we take into account the square law of resistance and the Coriolis force. The ...
2 votes
1 answer
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How can an explosion knock debris into orbit?

In Kurzgesagt's video on the Chicxulub impact, the narrator says that some of the debris from the impact was knocked into an orbit, where it would stay for thousands of years. According to this answer,...
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Bullet thought experiment continuation

So I'm sure a lot of you have heard the thought experiment where you shoot a bullet parallel to the ground, and drop a bullet at the same time and they hit the ground at the same time. Imagine now you ...
1 vote
2 answers
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Tossing ball in moving train

Suppose we toss a ball 2 meters up and it returns to the hand in .9 seconds, if we do the same in a moving train(constant speed), will it return at the same duration? .9 seconds? Is there an equation ...
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Flight of a baseball in heavy rain

Hello physics stack exchange, the first thing I'll say is that I am a statistician by trade, not a physicist. I want to predict the distance of a baseball given its initial velocity, launch angle, ...
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Energy conservation in a system of two bodies

I have no idea why my previous post was marked as a homework question where the solution was clearly visible. I was asking to clear a concept of mine regarding system of bodies. However,i will keep ...
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Projectile motion question - finding launch angle given only range and initial velocity [closed]

this is a first year physics problem about projectile motion, which I usually am pretty good with but this question confused me because it doesn't state that the motorcycle lands on the same elevation ...
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Proving the equivalence between max range for a fixed speed and min speed for a fixed range for a projectile

https://math.stackexchange.com/a/2663051/ In this post which was accepted as solution the answerer said "By the way, proving that the maximum range in a slope (or minimum speed to a fixed range) ...
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Do gases speed up as they leave the barrel of a gun? If so why?

I am attempting to understand the exact physics behind the recoil in guns. I made an original post on reddit here specifically asking why gases exiting a barrel after the bullet leaves causes a sudden ...
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Find the maximum distance the ball will travel [closed]

A ball is being thrown at initial speed of $v_0=7$ m/s with an angle $\theta$. I am trying to find the maximum distance the ball will travel before hitting the ground. At first i wanted to find the ...
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What happens if we fire a wooden bullet through a magnetic field?

What happens to the bullet and the field if we fire a non-metallic (such as a wooden) bullet through the field beside a bar magnet in a vacuum? Do the field lines move out of the way? Do the field ...
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How to create the function of an arrow being shot?

Suppose we have an arrow that is being shot and we know the angle, starting $\upsilon_{0x}$ velocity and starting $\upsilon_{0y}$ velocity. Assuming the arrow lands on the same level as it is being ...
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Acceleration of a projectile along an inclined plane

Launching a projectile at an angle of $\alpha$ along an incline making an angle of $\theta$ with the horizontal gives $$v_x = u\cos\alpha - gt\sin\theta ....(1) $$ $$v_y = u\sin\alpha - gt\cos\theta .....
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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 ...
2 votes
1 answer
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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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1 answer
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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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Finding How to Transform a Plane to Reflect a Trajectory through a Given Coordinate

So, for context, I am trying to analyze how this basketball machine works: https://www.youtube.com/watch?v=FycDx69px8U I have a basic understanding of how to calculate the new velocity of the ball ...
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Trajectory with non-trivial barrel length taken into account

I have pretty much the same question as this: Finding the Angle of Launch for a Cannon Projectile to Hit a Specific Point It wasn't answered back then, and I only found it after I made my own initial ...
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