The projectile tag has no wiki summary.
4
votes
2answers
720 views
The angle of launching an Angry Bird that will land the bird furthest from the launching point is 45 degrees?
This is a question motivated by Angry Birds.
When playing the game, I notice that if the initial velocity is constant, the way to land a bird furthest away from the launching point is by launching ...
3
votes
1answer
1k views
How to modify the bullet trajectory based on the ballistic coefficient?
I am new to the physics surrounding bullet trajectory and how it is calculated. I am a software developer and I am working on a ballistics calculator for rifles. I am using wiki for the trajectory ...
2
votes
1answer
11k views
Solving for initial velocity required to launch a projectile to a given destination at a different height
I need to calculate the initial velocity required to launch a projectile at a given angle from point A to point B. The only force acting on the projectile after launch will be gravity – zero air ...
1
vote
1answer
699 views
Trajectory of projectile thrown downhill
I'm teaching myself mechanics, and set out to solve a problem determining the optimum angle to throw a projectile when standing on a hill, for maximum range. My answer seems almost plausible, except ...
0
votes
0answers
123 views
How to calculate acceleration of a falling ball [closed]
If a ball was thrown or fell at an angle, given a starting height, and how far away the ball landed (ignoring air resistance) how would you calculate how fast it was going? (I'm guessing is meters per ...
26
votes
6answers
22k views
Could someone jump from the international space station and live?
Felix Baumgartner just completed his breathtaking free-fall skydiving jump from $120,000\,\text{feet} = 39\,\text{km}$ above the Earth, breaking the speed of sound during the process.
I was wondering ...
2
votes
2answers
316 views
How to calculate a firing location from point of impact data?
I would like to know how to calculate the point at which a bullet is fired from a gun given information from the scene where the bullet falls. The scene would contain the point of impact (GPS ...
2
votes
8answers
1k views
Real world examples for projectile thrown upwards or downwards
I am preparing a physics course for high school about projectile motions. If a projectile moves with initial velocity $v_0$ in the gravitational field of the earth, the equation
$$
s(t) = 1/2 g t^2 ...
8
votes
1answer
1k views
What is the maximum efficiency of a trebuchet?
Using purely gravitational potential energy, what is the highest efficiency one can achieve with a trebuchet counter-weight type of machine? Efficiency defined here as transformation of potential ...
4
votes
4answers
2k views
How Felix Baumgartner has reached the speed of sound quickly
I have watched Felix Baumgartner freefall; but I wonder how Felix has reached the speed of sound quickly, in a matter of some seconds, then we had no idea of its speed?
Any explanation please.
3
votes
2answers
168 views
Finding optimal angle for projectile, taking into account linear (Stokes) drag
If you throw a projectile from the ground at a certain angle, it's not hard to see that, assuming we're in a vacuum, throwing it at 45º from the ground will always make it go farthest before it hits ...
1
vote
4answers
151 views
How to get the angle needed for a projectile to pass through a given point for trajectory plotting
I am trying to find the angle needed for a projectile to pass-through a given point.
Here is what I do know:
Starting Point $(x_0,y_0)$
Velocity
Pass-through point $(x_1, y_1)$
I also need to ...
0
votes
0answers
56 views
Projectile Pathway [closed]
Assume you have a planet of mass $M$ and radius $R$ and have a stationary spaceship at distance $4R$ from the center of the planet.If a projectile is launched from the spaceship of mass $m$ and ...
0
votes
1answer
90 views
Time of a ball going up and down with air resistance
A ball is shot directly upward, and then it comes back to the place where it was shot. Suppose we have air resistance. Suppose $t_1$ is the time period from the moment that the ball was shot to the ...
0
votes
2answers
1k views
Projectile motion without air resistance
Does the mass of projectile affect its trajectory when it is projected in no air resistance environment and why?
