What is Projectiles: Definition and 195 Discussions
A projectile is any object thrown by the exertion of a force. It can also be defined as an object launched into the space and allowed to move free under the influence of gravity and air resistance. Although any object in motion through space (for example a thrown baseball, kicked football, fired bullet, thrown arrow, stone released from catapult) may be called projectiles, they are commonly found in warfare and sports. Mathematical equations of motion are used to analyze projectile trajectories.
This is a problem which, allegedly requires use of a trigonometric equation (so I've heard, but it is extra credit and thus no help beyond that will be given...)
The problem:
Libyan basketball player Suleiman Nashnush was the tallest basketball player ever. His height was 2.45 meters...
Homework Statement
A quarterback throws the football to a stationary reciever who is 40.0m down the field. If the football is thrown at an initial angle of 37.0 degrees to the ground,
a. What is the initial speed of the ball?
b. How much time does it take for the ball to reach the reciever...
Homework Statement
A shot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 degree above the horizontal. The shot hits the ground 2.08s later. You can ignore air resistance.What is the x-component of the shot's velocity at the end of its...
Hey, i just wanted to check my answers with somebody on this question. It's an even number so i can't check with the back of the book, and my final is tomorrow. Here's the question:
A soccer ball is kicked 56 degress above the ground at an inital velocity of 12m/s. the mass of the soccer ball...
Homework Statement
For type 1, 2, or 3 projectiles, which of the following are constant?
Dx, Dy, Vx, Vy
Homework Equations
The Attempt at a Solution
I figure that the only one that is constant in all situations would be Vx because there is no acceleration in the x...
When a aircraft is 4000m above the ground and flying upwards with a velocity of 50 m s-1 at an angle of 30° to the horizontal. A bomb is released. Neglecting air resistance, calculate
a) the time taken by the bomb to reach the ground,
b) the velocity of the bomb when it strikes the ground...
I've been searching all over the web and on this forum for an answer, and I haven't found it (or I may have found it and not understood...). If this is a re-hash, I'm sorry...
I'm working on some ballistics calulations for long range rifle shots. I've got pretty much everything worked out...
Projectiles...(delta)(theta) = g(delta)t/V0
I am given this problem...
if the projectile is fired a short time (delta)t later, show that the angle correction is
(delta)(theta) = g(delta)t/V0
where V0 is the inital speed of the projectile and by assuming that the elevations of the projectile...
Homework Statement
I was practicing exams for PHY 1 but I don't understand how to do this question, even with the mark scheme.
A cricketer bowls a ball from a height of 2.3m. The ball leaves the hand horizontally with a velocity u. After bouncing once, it passes just over the stumps at...
Homework Statement
A battle ship (4.09*107 kg) fires a salvo of 3 rounds from its foward turret in the direction of the bow at an angle of 10 degrees above the horizontal. Each projectile weighs 1220 kg, each barrel is 20.9 m long and the muzzle velocity (I don't know whether this is initial...
Say you have a target with a velocity on the x and y-axis and acceleration on the x and y axis.
Now, you have a gun with a fixed muzzle velocity. The gun is being carried by something with a velocity on the x and y and acceleration on the x and y. How would I go about solving the angle required...
I don't know is this is the best subsection i which to post this question. Please indicate me the right place, eventually. And forgive me for not so sublime english, as I'm not a naturally english speaker.
Now...
I think it's proven that the most effective projectile, in terms of...
Homework Statement
I have a general question. If you were to determine the intial velocity of an object shot vertically into the air, how could you use kinematics equations to predict the height and distance the object would reach if you were then later given a launch angle? Does this mean...
Homework Statement
the initial speed of a projectile is v0. what angle of projection theta makes its horizontal range R a maximum? what is the maximm horizontal range?
Homework Equations
The Attempt at a Solution
i think that for a maximum R, theta is 45degres
to work out...
Consider the following: You have a toy gun that shoots ping-pong balls at about 5 m/s. You aim the gun at a doll sitting on a fence. Just as you pull the trigger, a friend of yours (or so you thought) nudged the doll forward, just enough to fall off the fence. Will the ping-pong ball hit the...
hey everybody, i would really appreciate a little help with this.
I have a projectile, labeled zero, with mass m and velocity V. it travels in a parabolic motion until it reaches its apex, at which point it divides into two equal pieces, 1 and 2, with mass m/2 and m/2. Each of these pieces...
I wonder no one posted this question before. I understand we don't take the Earth curviture into equation of motion, but still projectiles do have parabolic trajectory.
Doesn't parabolic trajectory imply unbounded orbit?
okay i know how do do type one and type 3 projectiles but there is this certain kind of type 2 that i can't figure out. if the problem gives me a initial velocity and an angle of 30 degrees i am okay. BUT for this kind i don't know what to do:
"A gymnast becomes a projectile by doing a flip...
i'm having a lot of trouble with these:
1. A golf ball with an initial angle of 36° lands exactly 210 m down the range on a level course.
(a) Neglecting air friction, what initial speed would achieve this result?
(b) Using the speed determined in item (a), find the maximum height reached...
okay so here's the problem..
the fastest recored pitch in MLB was thrown by nolan ryan in 1974. if this pitch were thrown horizontally, the ball would fall 0.809 m by the time it reached the home plate, 18.3 m away. how fast was this pitch?
the book suggests the equation
delta y =...
I have my two expressions for time for (b) and (c) but I'm not sure how to use them to get the angles or values for initial velocity.
(b)t = \frac{2v_i\sin \beta}{g \cos \alpha}
(c)t = \frac{v_i cos \beta}{g \sin \alpha}
I have a test coming up on wednesday and i have a question about projectiles launced at an angle. Our teacher tells us that we can substitute equation into anontehr to get the final answer
A quarterback throws the football to a reciever who is 31.5 meters down the field. If the football is...
At each moment during its flight, a projectile has a velocity v and an acceleration a. The components of these variables are:
vx = x component of the velocity
vy = y component of the velocity
ax = x component of the acceleration
ay = y component of the acceleration
Which of these components...
[link looks fishy - deleted by moderator]
ok so one of my friends asked this question..
if you are riding in the back of a truck, and the truck is traveling at the speed of a projectile, what happens when the projectile is fired the opposite direction that you are traveling?
(see...
Given the context of this question being quite large and my main problem being the solving i won't bother with diagrams but anyway
the kinematics conditons are
Such that i have 10 = (Vcos15)t + 0.5gt^2
1.9 = (Vsin15)t + 0.5gt^2
Can anyone please show me the...
If a projectile is launched horizontally, and has initial velocity X, then is launched with the same force from an angle, let's say 45 degrees, would the initial resultant velocity (at time=0) still be X?
Can anyone help with these 2?
I can't seem to figure out how to get the answer of 2.8m for this ...
IF you throw a ball at an initial velocity of 26 m/s at an angle of 20 above the horizontal, how high above the projection point is the ball after 2.8 s?
and also
You drag a crat...
A stone is thrown vertically upwards with an initial velocity of 19.6m/s. What is it's velocity and position after 1s, 2s, 3s?
I'm getting confused between my positives and negatives. What answers did you get?
Projectiles- Physics11.
This is part of my lab, and i really can't figure this out:rolleyes:
So I need some help .,
Here are the questions ::
*Assume you can throw a baseball 40 meters on the Earth's surface.How far could you throw that same ball on the surface of the moon, where the...
A stone is projected from a point O on a cliff with a speed of of 20ms^-1 at an angle of elevation of 30. T seconds later the angle of depression of the stone from O is 45. Find the value of T.
I assumed that when the stone is at depression of 45 degree to O, it has reached the horizontal...
Q: an object is thrown from the ground into the air with a velocity of 20.0m/s at an angle of 27.0 degrees to the horizontal. what is the max height reached by this object?
i drew the triangle and found vertical side to be 9.08 m/s and horizontal side to be 17.8m/s using sin and cos...
Hi all,
If someone threw a ball vertically & we want to calculate the time needed to for the ball to return back to his hand taking into account air resistance, would it be different if we ignore air resistance??
When they derive the known laws for the maximum height, range & time, did...
1) A particle A, projected upward with velocity V in a direction making an angle theta with the horizontal, is fired from the top of a smooth plane whose angle of inclination to the horizontal is also theta. At the moment of projection a second particle B slides from rest at the point of...
an object launched vertically upward with an initial speed v. Neglect air resistance
a)At what height h above the ground does the projectile have a speed of 0.5v? Express your answer in terms of v and the magnitude of the acceleration of gravity g.
Using conservation of energy i found the...
I know how to solve projectile problems when they are launched from an angle if I know the angle and the initial velocity, I need to know:
a. Can you use the vertical displacement (m) and the initial velocity(m/s) to find the angle?
b. How do you find the initial velocity when you know the...
Havin a bit of trouble on this one, just because of the lack of information.
A projectile is launched over level ground at 35 m/s at an angle of 40 degrees above the horizontal. What is the projectiles time of flight?
Someone mind helpin me out? :smile:
I keep getting the wrong answer! For this question, I'm getting 4.70 m...can someone tell me what I'm doing wrong?
A ball is thrown from a point 1.2m above the ground. The initial velocity is 19.2m/s at an angle of 30 degrees above the horizontal. Find the maximum height of the ball above...
Ok, having studied projectiles over the past few weeks, reaching the "Equation for the path of a projectile stage," I've been presented with the following question. As far as I can see, there isn't enough info to answer the question (unless, of course, its one of those simultaneous equation...
"extra credit" problems dealing with projectiles
My physics prof. gave us the following "extra credit" problems dealing with projectiles, but there are two different ones, and therefor there will be two different color, lol but yeah here you go:
The first problem reads as following:
You...
Ok so i need a tinsy bit of help with a lab. It isn't technically hw, so i didn't post in the homework help, plus its not really like a problem per se either.
So what we need to do was create a device that would make a projectile. We just made a ramp shaped like a V and a marble that slides...
Well, its a debate about what's the best angle to fire a projectile to achieve maximum range.
using the formulae i found
r = (22sin(x) x 11cos(x))/9.8
where x is the angle, 45 gets the most range. But some people say 61 degrees is
using that formulae and ignoring air resistance 61...
Question regarding bullets and such.
Consider a 4.5kg mass at 20m/s has 900 Joules, 90 Newtons. And a 2kg mass at 30m/s has 900 Joules, 60 Newtons. Perhaps I've got the figures wrong, but it doens't make a difference to my question really.
On webpages dealing with ballistics, when...
[SOLVED] Projectiles, spin, momentum, and range
Greetings. I am simply seeking information regarding the matters of the subject line.
Here is the situation:
A spherical projectile (6mm pellet) is fired out of a device at say 400 feet per second. It is fired out level to the ground (as if...