Launch Definition and 342 Threads

When a rocket is launched, it starts not with velocity zero, but with the rotation velocity which the Earth gives it. Thus if a rocket is launched eastward, it requires a smaller boost (and if westward, a larger one) to achieve orbit. with a latitude of 31.1 degrees, cos(31degrees) 24902/24 =...

Homework Statement A stunt car is driven from a 10° ramp at 40m/s. How far away should the landing ramp be. (It lands at the same level as it was launched from.)Homework Equations Answer is 54.7mThe Attempt at a Solution v^2 = u^2 + 2as (v^2 - u^2)/(2a) = s (0 - 40^2) / (2 x 9.8) = -81.6

At the top of a "frictionless" loop that is 75 cm high, a 75 Kg ball bearing is traveling at 1.9m/s. From what height was the ball released? I have absolutely no Idea where to start here. Diameter= 0.075m Velocity=1.9m/s Force related to Gravity=0.74N m=0.075Kg

A spring cannon is located at the edge of a table that is 1.2 m above the floor. A steel ball is launched from the cannon with speed Vo at 35.0 degrees above the horizontal. (a) Find the horizontal displacement component of the ball tothe point where it lands on the floor as a function of Vo...

Edit: I solved my problem for launch angle. So now I have another question. I am writing a script for a cannon in a video game that will aim at XYZ coordinates by determining the angle and bearing needed to launch the projectile to hit the target. I wish to add a target-leading formula so...

So, For FIRST FRC robotics, We have made 3 different objectives to research, and I decides to start with the projectile. We need to launch an 8" diameter foam basketball into a goal that's 18" diameter. We can be anywhere from 3feet to 54 feet away. We had an idea of using the classic...

Dear all, I'd like to know if there is a way of reducing an image and launching it into the core of an optical fiber. By other words, I'm not interested in the spatial distribution of the light (the image itself) but I'm interested in gathering all the light coming from the scene and...

1. How do angle of launch, range, and flight time relate to one each other? 2.ΔX=vcosθ*t [b]3. According to the equation above,in my opinion as θ increases, range should decrease and time(t) should increase. Is there any other way of knowing the relation?

How to find the initial velocity required for a projectile to be launched at an angle theta, with a distance 'd' and height 'h'. An expression is required. I am unable to find one using all three. Thanks in advance.

I've been trying to determine the optimun angle of launch 1,5 metres above the ground by pooceeding from the basic equations for throwing motions: x=vcosθ*t y=y0+vsinθ*t-gt^2/2, y0=1,5m, g=9,8m/s^2 What I've done so far is expressing t as x/vcosθ. Insertion in the equation for y gives...

Homework Statement A bowling ball rolls off an angled roof. The roof is sloped downward at 18.4°, and the eaves are 12.0m above the ground.If it lands 2.0m away from the building how fast was it rolling when it left the roof(i.e find Vi). Homework Equations I know I have to use the...

I am making a weapon of sorts and am curious if it will work. the project consists of two tubes, a smaller one inside a larger one. To the outer tube there is a slingshot attached, the inner one contains a projectile(arrow, spear, BB, rock). the inner tube is drawn outside of the outer tube...

Homework Statement Vy - 15m Vx - 40m U - 17m/s V - 0 Time to reach highest point (t) 1.7s Homework Equations cos 0 = a/c The Attempt at a Solution 72 degrees. Not sure if this is the correct method of calculating the angle, especially since a projectile's trajectory is a...

Homework Statement A bowling ball rolls off an angled roof. The roof is sloped downward at 18.4 degrees and it is 12m above the ground. The question is how long does it take the ball to hit the ground?Homework Equations Δx=viΔt+1/2a(Δt)^2 I know this is the equation I have to use but I'm having...

Homework Statement We have 2 model rockets identical in all ways (weight, height, mass, propellant, etc). The first rocket is launched like most rockets (0 ft/sec) and reaches 1000ft. For the second rocket we use a SUPER rubberband launch system. The launch system sends the rocket to say, 150...

Homework Statement [EDIT: My first statement of the problem was wrong.] 1. The space shuttle releases a satellite into a circular orbit 720 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?Homework Equations F=GmM/r^2 Fc = mv^2/rThe Attempt...

Homework Statement A rocket is launched off and accelerates vertically up at 10 m/s 2. At 20 seconds, the motors are turned off, but the rocket keeps going up. a) What height did it reach? b) What was the time it needed to reach that height? g: - 9.8 m/s2 a: 10 m/s2 final velocity: 0 m/s...

Homework Statement A cannonball is catapulted toward a castle. The cannonball's velocity when it leaves the catapult is 32 m/s at an angle of 50° with respect to the horizontal and the cannonball is 7.0 m above the ground at this time. a) Assuming the cannonball makes it over the castle...

Homework Statement Your alpine rescue team is using a slingshot to send an emergency medical packet to climbers stranded on a ledge on the side of a mountain. If the height of the ledge is 270m (y = 270m) and the ledge is 390m from the slingshot (x = 390m), what is the initial velocity of...

Homework Statement A hot-air balloon rises from the ground with a velocity of (3.00m/s)y. A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.00m/s)x relative to the balloon. When opened, the bottle is 5.00m above the ground. What is...

Homework Statement A 7600 kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.35 m/s^2 and feels no appreciable air resistance. When it has reached a height of 570 m, its engines suddenly fail so that the only force acting on it is now gravity...

New to the forums, just starting a physics 11 course online and having some troubles with formulas. Homework Statement Projectile shot straight upwards, flight time = 4.70 sec Second Launch at 45 degrees (horizontal range approx. 50-60 meters A) Find Launch Velocity B) Find...

A cart launches a ball 15cm high. The vertical distance from the lowest ball to the highest is about two cart heights or 30cm. Estimate the launch speed of the ball? Estimate the time interval between successive stroboscopic exposures? I honestly have no idea where to begin...

Homework Statement A Hollywood daredevil plans to jump the canyon shown in the figure on a motorcycle. There is a 15. m drop and the horizontal distance originally planned was 60. m but it turns out the canyon is really 69.4 m across. If he desires a 3.0-second flight time, what is the...

I wasn't able to figure this problem out, so I looked at the answer. The answer is 19.06 degrees and 2.116 seconds. Using these values in the kinematic equations, I calculated that at x=200 ft, the height of the projectile is y=50ft. When x=200ft, shouldn't y=0ft? I thought the problem is asking...

The Statement is: A projectile is launched so that its point of launch is lower than its point of landing. I have 5 questions based off this statement, I know these questions may seem easy but I just wanted to make sure I had them right before handing my assignment in. I have a tendency to...

Beautiful animation. Landing system is novel and elegant. Hovering rocket platform lowers the vehicle on a cable to the the ground and then goes away. A lot of the deceleration work at Mars is done by the planet's atmosphere, saving fuel weight. Great stuff. Launch of "Curiosity" is...

Let's say, a missile fired from ground level is limited in range by aerodynamic and drag factors upto 3 kms. So how would that range be altered if the missile is fired from an altitude of 5 kms above mean sea level? What are the factors we need to take into consideration to calculate its range...

I thought today would be a good time to give NASA some thanks for all the http://www.nasa.gov/audience/forstudents/k-4/home/spinoffs_feature_k_4.html" , being it's the last Shuttle mission to lift off today. Thank you NASA.

Hello, I'm trying to build this, but I'm confused a bit about the optimal cheaper way of getting it working, it should be working on 12v battery car and cover 0-90 degree of movement , I've in mind couple of simple ideas, I think I can't build a complicated one like military launch pads...

1. OK so if you imagine a projectile is fired with an inital velocity (u) of 400 m/s at an angle theta. What two values of theta will cause the projectile to hit a point b that is 5 km horizontally away from the point of launch and 1.5 km vertically? u (magnitude)= 400 m/s deltaH = 1500 m (1.5...

For a water balloon launch project, our students need to calculate the distance that the balloon will travel given the following information: K- the spring constant of the launcher the mass of the water balloon the angle of launch the distance that the launcher is pulled back. Can...

Homework Statement A small negatively charged particle (mass m, charge –q) is currently at rest at the surface of a large positively and uniformly charged dielectric sphere (radius R, charge density p). What minimal “Launch velocity” v0 should be given to this particle so that it could leave...

I want to make it out to the final shuttle launch, but this would be a rather costly trip for me to make. The shuttle Endeavor is scheduled for Monday which might be the last launch, but the Atlantis is scheduled for June 28, if it is funded. What should I do? I haven't been to the space...

Homework Statement The maximum height reached by a projectile is 20 m. The direction of the velocity 1.0 s after launch is 20°. Find the speed of launch. Homework Equations vertical component of velocity = u \sin\theta - gt horizontal component of velocity = u\cos\theta where theta...

Homework Statement A block is being launch off a ramp, the length of the ramp is 5m(hypotenuse). The ramp also has a kinetic coefficient of .2 and the block has an initial velocity of 12m/s. Homework Equations -Wx-uFn = ma Velocity equations for finding distance off the rampThe Attempt at a...

I'm designing a model launch vehicle adapter (hollow truncated cone) with top diameter 60mm and lower diameter 80mm with a height of 1000mm. The skin thickness vary between options of 1.2mm 1.5mm and 2mm and I am trying to identify natural frequency. The issue is with second moment of inertia I...

Taken through an airliner's window. http://www.liveleak.com/view?i=2d1_1298750838".

http://daysnews.net/9676-discovery-shuttle-poised-for-historic-final-launch.html" What a great accomplishment. Good Luck Discovery.

Could supersized blimps, filled with helium, hydrogen, or a mix of those two or a vacuum support an elevator cable at high altitudes for easier spacelaunch? I'm thinking around an altitude of 80-120 km, but they could possibly float at other heights. Would such a structure require carbon...

Why is there no low cost space launch technology? The cost to buy the energy (in the form of electricity) required is very low (don't have the number on me).

Ok I have most of this solved but can't get the third part right. Homework Statement A spring of spring constant 128N/m is compressed a distance of 2.0m from its equilibrium position, and used to project a ball of mass 4.0 kg directly upwards. Neglect air resistance. 1. What is the...

Normally, one would think that an object generating large amounts of thrust would fly all over the place with no clear direction. How does a rocket stabilize and launch perfectly straight up?

http://www.theglobeandmail.com/news/world/americas/pentagon-stumped-by-apparent-missile-launch-off-us-coast/article1791785/ https://www.youtube.com/watch?v=CeXNC8k9FKU

How do you calculate the launch speed of an object using only the distance it travels the angle of launch? If there is an equation, I would be very happy if you could tell me what it is. This is the only thing I need.

Homework Statement So I just finished a physics test and I'm not sure if I approached a question correctly... Our professor gave us the mass of a satellite, and the mass of an imaginary planet and its radius. Then he gave us the amount of initial kinetic energy given to the satellite when...

Hello everyone! This is my first post, and I regret that it has to be a question that is so elementary. The Problem: I am in an introductory engineering course in which we were divided into teams and told to construct a catapult. Rather than follow design requirements, and despite my...

Homework Statement Hi all, this is my first post here because I am having an issue with an assignment in my General Engineering class (physics related). The assignment is to find an action movie clip that portrays something to be real but is, in reality, not possible. My group and I decided on...

Homework Statement A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3° above the horizontal from the very top of the mountain, lands at the foot of the mountain 9.37 km (horizontal distance) away. What initial speed must the rocket have...

Homework Statement A potato gun contains a spring which is compressed a distance of 7.30cm (0.073m) when it is loaded. If the spring's constant is 41N/m, what is the launch speed of a .00321kg piece of potato when the gun is fired? Give the answer in m/s. Homework Equations Power = W/T...