The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [projectile]

Object moving through space due to the exertion of a force.

830 questions
Filter by
Sorted by
Tagged with
40 views

Equations of motion in a free fall with friction [on hold]

I treat this problem in 1D. Let $F_G=mg$ be the gravity force and $F_F =-\lambda \dot{z}$ be the friction force with $z$ the vertical position. I try to find velocity and position as a function of ...
24 views

How to find the initial speed on the y axis while only having $Dy$, $Dx$, angle, and acceleration? [on hold]

Is it possible to find the initial speed of a projectile on the y axis while only having $D_y$ (distance on the y axis), $D_x$ (distance on the x axis), the angle and $a_y$ (acceleration on the y axis)...
68 views

Can someone explain what is the force the ball will exert?

If a ball is falling under free fall then the force exerted by the ball on the ground would be $mg$. But that's not the case in real life ball would hit with more force. But when i draw free body ...
28 views

PYTHON, project tile motion with air resistance [on hold]

On October 24, 2014 Alan Eustace, a Google executive, lifted himself in a helium balloon to an elevation of 41,420 meters above sea level. At that height he separated from the balloon with an ...
42 views

Question is in description [on hold]

If a volleyball gets served at a height of 2ft at 15m/s from one side of a 60ft court over a 7ft net, what angles will make the ball travel the whole court exactly?
17 views

63 views

Ballistic with friction - what is wrong with my reasoning?

I consider a ballistics problem with friction: Here is a graphical representation of it: I know from the textbook that the solution is: Which is different from what I found. Here was my ...
37 views

Trajectories of a thrown object (with bumps considered)

Assume that I stood at the boundary line of a football / baseball / cricket ground(without any turf/pitch/grass in it) - just a plain ground - like play ground. I have a ball that can bounce when ...
115 views

Why do we subtract the velocity of the gun barrel to find the velocity of bullet in classic gun barrel problems?

The very subtle conceptual problem I'm having is that assuming the gun barrel is at rest...and then it fires the bullet by means of an mini explosion of gunpowder let's say then it is delivering the ...
88 views

An exploding projectile [closed]

A mass $3m$ is thrown with a velocity of $20\sqrt3$ m/s at an angle of $30^{\circ}$ to the horizontal from a point, say $A$, on level ground. After reaching a certain height, $h$, it explodes into two ...
40 views

Features of a Jet of Water

Having created a water rocket that operates with compressed air forcing water out through a bottle's nozzle, I was interested in the some of the features of the jet of water that can be seen using ...
64 views

Flight time of spherical bullet fired horizontally versus dropped vertically / effect of crosswind on spherical car

Would a spherical bullet fired horizontally from a musket stay aloft longer than a spherical bullet dropped from the same height? I know two similar questions have been asked (Will a bullet dropped ...
42 views

Bouncing ball physics

Do we generally ignore energy loss in kinematics when the ball ,falling under gravity , is bouncing back.Because below graph shows that Ball got the maximum velocity with which it was thrown earlier,...
37 views

Why is the velocity in the horizontal direction constant for 2D projectile motion?

For 2D projectile motion, why is the velocity in the horizontal direction constant? I learned that we neglect air resistance, but why? And isn't there horizontal acceleration at the beginning when ...
104 views

Why does a torpedo travel farther than a bullet underwater?

We know that to move in water we require more energy. Even shooting a gun, the bullet travels a very small distance. But how could torpedoes move so fast inside the water? If they have such an energy ...
47 views

Ambiguous angle for projectile

A projectile is launched with at an angle $\theta$ to the horizontal with speed $v_o$ along an incline of $\alpha$ to the horizontal. Find the angle of projection that maximizes the distance traveled ...
29 views

Under what angle should we kick a ball at the foot of a hill in such a way that it falls back to us? [closed]

Under what angle should we kick a ball situated at the foot of a hill with incline $\varphi$ so it falls back to the starting point? Find the solution for the first rebound. Under what angle should ...
83 views

Muzzle Velocity of a Bullet out of a Barrel

We want to know the speed of a bullet, in feet per second, for a given round. We know the weight of the bullet, volume of the casing, amount of gun powder, length of the barrel, and diameter of the ...
74 views

Dropping a stone velocity

I'm asked to calculate a stone being dropped from rest to hit the water it takes 2.7s I found the final velocity to be 26.46m/s
90 views

High velocity mushrooms?

So y’all know meteoroites burn up in our atmosphere I’m looking for an equation or something that will allow me to calculate how fast a substance can move before it starts to burn up. Specifically I’m ...
69 views

Use of direction of downward velocity in equation of motion

[NOTE: I am not asking anyone to solve the question below but to point out where I might be wrong] Q- A skier jumps from a horizontal track and lands on a steeper track with a launch angle of ∅=11.3°(...