Projectile Definition and 1000 Threads

Projectile Motion without Initial Velocity (Only time and angle given) Homework Statement A projectile is launched at an angle of 50° above the horizontal and it hits the ground in 12 seconds. a. Calculate the maximum height of the projectile. b. Find the range of the projectile...

In projectile motion problems, where an object is thrown (not horizontally) off of a cliff, does only the cliff's height matter to this equation: y = v_y * (t) + (a * t^2)/2 What I'm confused about is the little bit of height gained by the object when it is first thrown off of the cliff...

The question is - A 1200kg car drives off a cliff with a horizontal velocity of 30m/s and an upward vertical velocity of 15m/s. a) Neglecting air resistance, what is its horizontal and vertical velocity after 1s? b) What is the maximum height above the ramp the car reaches? I used - v =...

I came across this one problem that asked for speed and velocity and I was wondering what the speed is suppose to be. I read somewhere that its the magnitude to velocity. So I want to see if I am doing this right. A ball is launched off the top of a building. The initial velocity of the ball...

1. Hi, I'm currently in my second last year of high school (Australia) and my Physics assessment task is all about cars, however, a stimulus Item is the Movie Speed, long story short, I need to find the minimum angle required, including air resistance at a velocity of 30 m/s. 2. I have tried...

I was watching a YouTube video on projectile motion: It says that the range is given by the formula: d = v*cosθ*t It also says that the time to reach the maximum height is given by the formula: t = \frac{v*sinθ}{a} where v*sinθ is the initial vertical velocity Well, not...

Ok, so I have calculated an ideal speed of a projectile, but now I would like to know how it is affected by air resistance, although I'm only interested in the air resistance when it's outside the barrel, hopefully that'll simplify it a bit. So the formula is: FD = \frac{1}{2}CDρAv2 Can I...

Homework Statement Two engineers are working together in a competition to launch a pumpkin as high as possible using a launching device that must be kept within a certain height. Since the engineers have a height restriction, they want to accelerate the pumpkin to a large speed before...

Homework Statement A rocket ship parked at rest in space suddenly explodes into 3 pieces of equal mass traveling in the directions shown. If the piece traveling upward has a speed of 150 m/s, what are the speeds of the other two pieces?Homework Equations The Attempt at a Solution How do I...

Homework Statement A ball is kicked horizontally with speed v1 from the top of a building of height h. A small cart is moving towards the building with a constant speed v2. Right at the instant when the ball is kicked, the cart is at a distance d from the building. What is the distance d so...

Homework Statement What is the DISTANCE traveled by the projectile? I know how to calculate the displacement, but this includes both x and y components, so how do I calculate the distance? I'm sure it must include both height and vertical displacement components Homework Equations...

Homework Statement An archer stationed at the edge of a cliff shoots an arrow horizontally at 90ms^-1. The arrow falls down and hits a target. Assuming that the arrow is shot from a height of 20m, calculate: i. How long it takes the arrow to reach the target. (done) ii. How far...

Homework Statement A projectile is fired through the air. It is launched from the ground, and travels without interference from wind or air resistance, landing on a raised platform above the field. Initial speed vs. final speed: Initial vertical velocity vs. final vertical velocity...

I'm having some difficulty with a problem about projectile motion. Just some background about me: I'm just beginning an intro to physics course and I don't have much of a math/science background, so I apologize if I make any errors regarding equations and such. The problem: A boy kicks a...

See the attachment. The right answer is θ=60 degrees but i am getting sinθ = ±√3.

Homework Statement A cricketer strikes the ball at a height of 1 metre. It passes over a fielder 7 metres from the ball at a height of 3 metres, and hits the ground 60 metres from the bat. How fast was the ball hit? The issue I have here is that after forming a quadratic in terms of tanα...

A cannon with a muzzle speed of 1000 m/s is used to start an avalanche on a mountain slope. The target is 2000 m from the cannon horizontally and 800 m above the cannon. At what angle, above the horizontal, should the cannon be fired?

A firecracker with mass 100g is propelled vertically with a launch force of 1.2N applied over 5s, after which it explodes into two 50g fragments. One fragment goes horizontally at 15m/s and the other goes to the right at angle 53 degrees with the horizontal at speed 25 m/s. find the distance...

Hello all I have a question I was hoping someone could answer for my homework. A 78.0-kg boulder is rolling horizontally at the top of a vertical cliff that is h1 = 16 m above the surface of a lake, as shown in the figure below. The top of the vertical face of a dam is located d = 110 m from...

Hi, How does one prove that a projectile will shoot 3x higher at 60 degrees that at 30 degrees? And there is no more info available. Here is what i attempted: I gave it 500m/s, 1a.) The formula for maximum time @ 60 degrees: th = (u)(Sin60)/9.8...

Homework Statement A football player attempts a 30m field goal. If he is able to impart a velocity u of 30 m/s to the ball,compute the minimum angle θ for which the ball will clear the crossbar of the goal. (Hint: Let m = tanθ .) Homework Equations V0x = V cosθ V0y = V sinθ We get t...

This a question from projectile motion. This is NOT "homework"; it's a concept that got me thinking. When a projectile is launched from the ground level and it falls back on the same (ground) level, the horizontal displacement is maximised if the angle of projection (with respect to the...

Homework Statement A particle of mass m is projected with velocity of magnitude u at an angle of θ, measured anticlockwise from the line parallel to the plane, from a point (sx,0,sy,0) on a plane inclined at an angle of α measured anticlockwise from the line parallel to the ground. The...

Homework Statement A gun fires a shell with the horizontal component of its velocity equal to 200m/s. At the highest point in its flight, the shell explodes into three fragments. Two of these fragments, which have equal mass, fly off with speeds of 300m/s relative to the ground, one along the...

Hi there, sorry for asking a question as my first post instead of contributing to the community however I have a problem which I just cannot seem to find an answer to. I am trying to model the flight of a bullet when taking into account air resistance and I am using this equation to get the...

I need to prove that the scene where Neo jumps off the cliff in the Matrix is wrong. Obviously he can do that because he is not in this world. But using projectile motion, how would I prove that its wrong? Which equations do i need to use?

A baseball leaves the bat at a height of 1.23 m above the ground, traveling at an angle of 45.0 degrees with respect to the horizontal. The initial velocity of the ball is such that, for an unobstructed trajectory, it would land 120 m from the home plate. The ballpark fence is at a distance of...

Homework Statement A projectile is fired from ground level at time t=0, at an angle of θ with respect to the horizontal. It has initial speed V0. Part A Find the time it takes the projectile to reach its maximum height. Express in terms of V0, θ, and g. Part B Find the time at...

Homework Statement 1. Find the maximum angle of projection of a projectile such that its position vector from the origin to the subsequent position of the projectile is always increasing.Homework Equations The Attempt at a Solution x(t)=v*cos(A)t, y(t)=v*sin(A)t-(1/2)gt^2. v is the initial...

Homework Statement So, I'm building a "Monkey Gun" and I want to be able to find the instantaneous velocity of my dart at a certain time. I shoot the gun at some angle, θ. The problem is, if I divide the velocity into x and y components, each depends on and impacts the other (the force from...

I have the final answer of: sin2(theta) = 0.871 why does (theta) = 30.3 deg OR (theta) = 59.7 deg I get why this could be physically, but I'm not sure why mathematically?

Homework Statement A fire hose held near the ground shoots water at a speed of 6.8 m/s. At what angle(s) should the nozzle point in order that the water land 2.0 m away? Why are there two different angles? ax=0 xo=0 x=2.0 m ay= 9.80 m/s/s y0=0 y= I'm guessing 0, because it lands on...

Homework Statement A soccer player is taking a penalty kick from a distance of 11 meters from a goal which is 2.44 m high (forgive the possible incorrect use of English, since I'm not a native speaker). Given an initial speed of the ball of 90 km/h (which is 25 m/s2) calculate the initial...

I have been looking into projectile motion equations and am struggling to find suitable ones that cover a projectile being launched at height. I know this sounds like homework, but it isn't. I am after trying to understand a 6 degree of freedom style taking into account terminal velocity...

Discussion

Homework Statement A ball is projected vertically upward with a velocity of 30m/s. It strikes the ground after 8's. 1.1) Determine the height of the building 1.2) Find the height of the ball relative to the ground as well as its velocity at t=3 and t=5 1.3) At what time will its...

Homework Statement Is momentum conserved in a projectile? I was a bit confused with this. Would it be conserved only horizontally? What if it explodes at its max height? Homework Equationsmv=mv2 The Attempt at a Solution

Homework Statement We need to find angular velocity of a particle from point of launch at its maximum height. Particle is launched at θ angle wrt horizontal. Initial velocity is u. Only acceleration is gravity. Homework Equations All projectile equations i suppose ( h(max)=u2sin2/2g ...

Homework Statement A cannonball is launched at 90.0m/s at an angle of 60.0° above the horizontal from the top of a tower that is 38.0m high. How far away from the tower does it land if the ground is level?Homework Equations Vix=90.0m/s X Cos60 Viy=90.0m/x X Sin60The Attempt at a Solution I used...

1. A basketball will be launched of height h and will hit the hoop that has a height of H. The horizontal distance between the ball and the hoop is d. Given an initial velocity Vo write both possible launch angles in function of h, H, Vo and d 2. theta=tg^-1(Vy/Vx) (1)...

Homework Statement A 1kg mass is projected from the edge of a 20m tall building with a velocity of 20 m/s at some unknown angle above the horizontal. What is the kinetic energy (in J) of the mass just before it strikes the floor? Homework Equations K= 1/2 m v^{2} The Attempt at a...

A sniper fires a bullet at 120 m/s at 30° above the horizontal from the roof top of a 35 m high parking garage. If the bullet strikes the level ground beside the parking garage: a.)How long was the bullet in the air? b.)How far from the base of the parking garage did the bullet land? c.)At...

Homework Statement A projectile is shot straight up from the Earth's surface at a speed of 1.10×10^4 km/hr Homework Equations mgh=.5mv^2 The Attempt at a Solution I converted the speed to m/s and 3055.5556 m/s masses cancel out so i get 9.8h=.5v^2 I plugged in v and solved for...

Here is the question: Here is a link to the question: I need help with Trig/Physics? - Yahoo! Answers I have posted a link there to this topic so the OP can find my response.

Homework Statement I am wondering what is the relation of sinθ & time of flight in projectile motion with angle. (under the case of same velocity) Is the graph of this in a parabola shape?? Homework Equations t = (2u sinθ) / g (u in constant) The Attempt at a Solution would it be...

Homework Statement Experts recommend a release angle of 35 degrees for javelin throwing, use this as the release angle. Determine what the length of the equivalent throw on the moon would be. Clearly communicate the procedure you followed, and fully justify your answer. Homework...

Homework Statement (Assume no friction) A car that has a mass of 3970 kg is accelerated from an initial velocity of 0 up a ramp that is 50 meters long (the hypotenuse) and has a height above the ground at the end of the ramp of 10 meters. The velocity of the car at the end of the ramp is 150...

Homework Statement A ball is thrown at a speed of 22.2 m/s at an angle of 44.4° on to a flat level field. The ball leaves the thrower’s hand at a height of 1.88 m. (a) How long is the ball in the air, (b) how far from where the thrower stands does it hit the ground, and (c) what is the...

[b]1. Easy solution that I'm pretty sure I talked myself out of. Using a spring loaded shooter, first shoot it off a table and calculate data and then move to another table of a different height and shoot with an incline into a sandbox. Must hit within 10cm of line drawn in the sand. known...

Allowed materials: -1 sheet of 8"x8" cardboard to be used as the base -another sheet of 8"x8" cardboard (that may be cut) -2 standard paper towel tubes -10 standard popsicle sticks -up to 10 rubber bands (maximum unstretched length is 10 cm) -5 standard paper clips (max length 5 cm each) -...