Projectile Launch Angle & Flight Time: Questions Answered

  • Thread starter Thread starter shinystar716
  • Start date Start date
AI Thread Summary
To determine the launch angle of a projectile using initial and final velocity, vector analysis and kinematic equations are essential. Factors affecting projectile flight time include initial velocity, drag, and the gravitational constant, while mass does not influence flight duration. The radius of the object and height from which it is launched do not directly affect flight time. More specific questions can lead to clearer answers. Understanding these principles is crucial for mastering projectile motion.
shinystar716
Messages
3
Reaction score
0
I just have a few quick questions. If I'm given an inital and final velocity how can I use that information to find the launch angle of the projectile? Secondly, having to also do with projectiles, what are the factors which determine how long an object is in projectile flight. I'm pretty sure that the initial velocity and perhaps the mass of the object do. I thought planet's acceleration due to gravity might also. Then I wasn't sure about radius of circular object (i.e. cannonball), or height of cliff - i don't think those could. Help would be appreciated!
 
Physics news on Phys.org
1) You use vectors and kinematics.
2) Initial velocity, drag, inclines, etc. (Why would the mass do anything? Yes the gravitational constant will obviously effect the time in the air.)

I can't do your homework for you because then I would deprive you of some good stuff. If you want better answers you have to be more specific with questions and thoughts to their answers.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Find Projectile Flight Time Given Only Maximum Height
Replies
4
Views
2K
Relationship between horizontal range and angle of launch
Replies
7
Views
3K
Roller coaster mock Lab Report
Replies
9
Views
684
Find the height of a lamp based on the velocities of projectiles
Replies
40
Views
2K
Launching a Projectile with Air Resistance
Replies
13
Views
3K
Projectile Motion on the Moon: Finding the Optimal Launch Angle Using Equations
Replies
2
Views
3K
I need opinions on a Projectile Motion problem that I made up
Replies
11
Views
2K
Relationship between Launch height and range of a projectile
Replies
15
Views
25K
Projectile-car system and momentum
Replies
2
Views
1K
Calculate the displacement? (Projectile motion problem)
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top