Wednesday

April 16, 2014

April 16, 2014

Number of results: 20,918

**physics**

A projectile was fired out of a lead ejector at an angle of 45 degrees up from horizontal. The projectile velocity was 1000.00 meters per second. How high did it go? and how far did the projectile go?
*Thursday, May 2, 2013 at 7:27pm by john*

**physics**

In the javelin throw at a track and field event, the javelin is launched at a speed of 29 m/s at an angle of 35° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is required ...
*Wednesday, September 15, 2010 at 4:24pm by Xavier*

**physics **

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 35.0 m/s at an angle of 33.7 ° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is ...
*Thursday, January 26, 2012 at 5:54pm by Erin*

**physics**

An object is to be thrown through a window 3.5 m high a distance 7.5 m away. It is launched at an angle 70 degrees above the horizontal. a. The initial launch speed at the specified angle which will allow the projectile to pass through the window is ? b.The final speed of the ...
*Thursday, February 9, 2012 at 7:51pm by Anonymous*

**Physics**

PROJECTILE LAUNCHED FROM EARTH'S SURFACE? A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4km/hr. How high does it go? (answer in km) Supposed to solve this using F=G(mm/2r)...?
*Tuesday, April 12, 2011 at 9:07pm by Dan*

**physics**

brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. for what other angle of launch at the same speed would the projectile land just as far away?
*Tuesday, December 7, 2010 at 9:39pm by sabina*

**physics**

Brandon launches a projectile at an angle of 75 above the horizontal, which strikes he ground a certain distance down range. fo what oher angle of launch at the same speed would the projectile land just as far away?
*Wednesday, September 28, 2011 at 1:03am by Anonymous*

**Physics**

Brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. For what other angle of launch at the same speed would the projectile land just as far away?
*Monday, September 24, 2012 at 11:11pm by Baylyn*

**MATH**

A model rocket is launched vertically upward from the top of a cliff 144 feet above sea level. This translates to the model y = -16t^2 + 128t + 144 where y is the height in feet and t is the time in seconds after it was launched. After it is launched, when will the rocket hit ...
*Thursday, September 25, 2008 at 9:56am by jennifer*

**College Algebra**

A projectile is thrown upward with an initial velocity of 272 feet per second. After t seconds, its height h(t)above the ground is given by the function : h(t)=-16t^2+272t. a. Determine the projectile's maximum height. b. Determine how long it takes the projectile to reach its...
*Saturday, February 18, 2012 at 6:19pm by Amelia*

**Applying Algebraic Thinking to Data**

Snoopy is in his plane, 4500 ft above ground. he fires a projectile straight up. The Vo of the projectile is 340 ft/s. (after the projectile is fired, it has no acceleration, so its height can be modeled by a "falling body" model). The Red baron is maintaining a constant ...
*Friday, April 20, 2012 at 7:49pm by Rachelle*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
*Monday, July 25, 2011 at 12:15pm by Shivam*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
*Monday, July 25, 2011 at 12:19pm by Shivam*

**Applied Maths**

the horizontal range of a projectile is 4a. It passes a tower that height a/2 when the horizontal range was a. What is the projectile velocity and projectile angle.
*Saturday, December 18, 2010 at 8:35am by Danvi*

**physics**

A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. What will be it's speed when it strikes the ground below?
*Tuesday, October 26, 2010 at 10:29am by jessica*

**physics**

A projectile is shot from the edge of a cliff 125 m above ground level with an initial speed of 105 m/s at an angle of 37.0o with the horizontal, as shown in Figure 3-39. (a) Determine the time taken by the projectile to hit point P at ground level. (b) Determine the range X ...
*Wednesday, April 25, 2012 at 12:07pm by matin*

**Projectile Motion Physics**

An Arrow directed at a stationary target is shot at an angle of E25N. The arrow hits the intended target at the same height from which it is launched, 3.0s later. Determine the distance from the archer to the target.
*Wednesday, October 6, 2010 at 4:04pm by Jason*

**physics**

You have left out what you are supposed to "find". If you are trying to figure out the angle that the second ball was launched, it is the complementary angle, 62.8 degrees. There IS enough information to prove this. The horizontal range of an object launched with velocity V at...
*Saturday, January 30, 2010 at 10:28pm by drwls*

**physics **

A railroad gun of mass M = 2.0 kg fires a shell of mass m =1.0 kg at an angle of theta= 35.0 with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v_0 =100.0 m/s...
*Monday, November 4, 2013 at 1:57pm by ashok*

**Physics**

A projectile is launched with an initial velocity of 268 m/s, at an angle of 45 degrees above the horizontal. At a certain point, A, in its motion, its velocity angle is 17 degrees above the horizontal. At another point, B, later in its motion, its velocity angle is 30 degrees...
*Monday, October 19, 2009 at 2:47am by Bill*

**Physics**

A railroad gun of mass M = 3.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 45.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=120....
*Friday, October 25, 2013 at 5:30pm by Anonymous*

**Physics**

A railroad gun of mass M = 3.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 45.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=120....
*Friday, October 25, 2013 at 5:30pm by Anonymous*

**Physics ASAP PLease**

A railroad gun of mass M = 2.0 kg fires a shell of mass m =1.0 kg at an angle of theta= 35.0 with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v_0 =100.0 m/s...
*Saturday, October 26, 2013 at 2:21am by askas*

**Calculus (Gr.12) Math**

I am not sure how to do this question I know I have to take the derivative but then I am left w/ to unknowns. If a projectile is shot up hill the distance (range) of the landing point up the hill depends on the initial speed of the projectile,v, the angle of inclination, a, ...
*Saturday, April 6, 2013 at 10:39am by Bob*

**Physics**

A projectile is launched from ground level with an inital velocity of 50 m/s at an angel of 60 degreess aove the horizontal. Use g=10m/s. What is the max height reached by the projectile? I used change in y=voyt +1/2at^2 =50(2.4) + 1/2(=10) (2.5)^2 =125-31.25 =93.75m I was ...
*Wednesday, September 26, 2007 at 2:40pm by Tammy*

**Physics**

A projectile is launched with 200kg m/s of momentum and 1000 J of kinetic energy. What is the mass of the projectile. The answer is said to be 20 kg but I can't get it. I tried this but it didnt work: p=mv=200 m=200/v I plugged that into this equation: KE=1/2mv^2=1000 = 1/2(...
*Tuesday, October 23, 2007 at 6:37pm by Marisol*

**College physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1400 . At what altitude is the projectile's speed one-half its initial value? do you use the equation Ei = Ef and vf would be 700 E= 1/2 mv^2 -G (Mass of the moon/radius)
*Thursday, November 19, 2009 at 6:00pm by Mary*

**Physics**

The projectile fired from the origin impacts 883.67m downrange after reaching a height of 127.55m. The second projectile will collide with the first projectile before it reaches its maximum height if the second projectile's launch angle was selected to result in equal maximum ...
*Thursday, September 22, 2011 at 9:39pm by tchrwill*

**ap physics**

A ball is launched at an upward angle of 45 degrees from the top of a cliff 165 meters high, with a speed of 180 m/s. Use conservation of energy to find how fast it will be traveling when it hits the ground.
*Friday, November 19, 2010 at 10:18am by max*

**Physics**

A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
*Monday, November 15, 2010 at 11:57pm by Linda*

**Physics Projectile Motion**

What angle (from earth) should one shoot a projectile so that it reaches it's maximum?
*Thursday, November 8, 2012 at 9:58am by Leslie*

**Aberdeen**

A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 120 m.
*Monday, September 20, 2010 at 11:23pm by James*

**12th grade**

A projectile is shot from the edge of a cliff h = 125 m above ground level with an initial speed of v0 = 115 m/s at an angle of 37.0° with the horizontal, as shown in Fig. 3-39 (a) Determine the time taken by the projectile to hit point P at ground level. (b) Determine the ...
*Tuesday, September 22, 2009 at 8:44pm by sundus*

**physics**

A projectile is fired at an angle of 30ᵒ above the horizontal from the top of the cliff 600 ft high. The initial speed of the projectile is 2000 ft/s. how far will the projectile move horizontally before it hits the level ground at the base of the cliff?
*Monday, January 13, 2014 at 1:06am by Anonymous*

**physics**

A ship maneuvers to within 2500m of an island's 1800m high mountain peak and fires a projectile at an enemy ship 610m on the other side of the peak. If the ship shoots the projectile with an initial velocity of 250m/s at an angle of 75 degrees. how close to the enemy ship does...
*Friday, October 8, 2010 at 1:36am by Sydney*

**College Physics**

A projectile is fired at an upward angle of 55.0 degrees from the top of a 230m cliff with a speed of 180m/s.What will be its speed when it strikes the ground below? (Use conservation of energy.)
*Thursday, February 25, 2010 at 11:03pm by Sandy*

**physics**

a projectile is shot up 25 m/s at an angle of 34 degress how high imto the air does the projectile go?
*Monday, March 28, 2011 at 7:32pm by kane*

**Classical Mechanics**

The classical mechanics equation for distance traveled by a projectile, launched at speed v, angle θ, and height above the ground h, is: d = v cos(θ) (v sin(θ)+√(v^2 sin^2(θ)+2 g h))/g When h = 0 and θ=π/4 this reduces to simply: d = v^2/g ...
*Saturday, September 7, 2013 at 2:52pm by Graham*

**COLLEGE PHYSICS**

A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 99 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile.
*Friday, September 10, 2010 at 8:09pm by CARY*

**Science - Physics**

When a projectile is fired horizontally, which of the components of its motion is (A) motion at constatnt speed (B) uniformly accelerated motion (C) If the initial velocity of the projectile is increased, what effect will this have on the time it takes the projectile to fall ...
*Wednesday, December 6, 2006 at 7:53pm by Nicole*

**Physics Classical Mechanics**

A railroad gun of mass M = 2.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 40.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=110....
*Monday, October 28, 2013 at 6:14am by Anonymous*

**physics**

a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain angle with respect to the horizontal. if the projectile hits the ocean surface. 49.2 seconds after being fired, determine the horizontal range of the...
*Saturday, May 4, 2013 at 6:23am by jennierson*

**Physics**

A projectile is fired with an initial speed of 31.0 at an angle of 10.0 above the horizontal. The object hits the ground 7.50 later. a. How much higher or lower is the launch point relative to the point where the projectile hits the ground? b. To what maximum height above the ...
*Thursday, October 15, 2009 at 1:18am by Kelcie*

**Physics**

A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later. a) How much higher or lower is the launch point relative to the point where the projectile hits the ground? b) To what maximum ...
*Wednesday, October 19, 2011 at 1:10pm by Sara*

**Physics**

If a projectile has a launching angle of 52 degrees about the horizontal and an initial speed of 18 m/s, what is the highest barrier that the projectile can clear?
*Wednesday, May 11, 2011 at 11:58am by Addie*

**Physics**

a projectile has an initial velocity of 15.0 m/s at an angle of 30 degrees above the horizontal. What is the location of the projectile 2.0 seconds later?
*Tuesday, November 22, 2011 at 6:59am by nam maurer*

**Math**

A projectile is launched from a cannon that sits 4 feet off the ground at an initial velocity of 120 ft/sec. Find the position function and how long is it before the projectile hits the ground? I got -16t^2 +120t+4 for my position function, but I'm not sure how to find the ...
*Tuesday, November 12, 2013 at 7:48am by Kristen*

**physics **

a ufo is trying to escape by flying at the constant velocity of 70m/s at an upward angle of 2 degrees. it passes directly over you at a height of 40 m. at the instant it is directly above you you attempt to shoot it down by launching a projectile. what is the lowest launch ...
*Thursday, September 19, 2013 at 12:53am by mary*

**Math**

A projectile is fired with an initial velocity of 350 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile. The parametric equations for the path of the projectile are x = (350 cos 45°)t, and y = (350 sin 45°)...
*Saturday, April 12, 2008 at 6:58pm by Devon*

**Pre-Calculus**

Hello, A projectile is launched straight up from the ground with an initial velocity of 320 ft/sec. a. When will the projectiles height above the ground be 1024 ft? For this I got 16 seconds b. When will the height of the projectile be at least 24 ft? I am not sure how to ...
*Sunday, September 6, 2009 at 8:58pm by Ashley*

**Physics**

A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the other side of the peak, as illustrated in Figure 3-29. If the ship shoots the projectile with an initial velocity of v = 256 m/s at an angle of θ...
*Monday, February 27, 2012 at 9:38am by Shawn*

**math**

A gun is fired from a bunker of 2m deep with an initial velocity of 500m/s at an angle of pi/6 a) Find the parametric equations of the position of the projectile b) Find the range of the projectile to the nearest meter. c) Find the maximum height of the projectile to the ...
*Thursday, March 17, 2011 at 3:23pm by Sandy*

**physics**

what is the initial velocity (Vyo) of a projectile launched horizontally? why? i know that it is 0 m/s, but i don't know why/how to explain it.
*Saturday, November 3, 2007 at 5:12pm by beckii*

**Projectile Motion Physics**

It matters how fast the arrow was launched, and at what elevation.
*Wednesday, October 6, 2010 at 4:04pm by bobpursley*

**calculus**

A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 20 feet. (a) How many seconds after launch does the projectile attain maximum height? ...
*Saturday, March 10, 2012 at 2:40pm by Brian*

**Physics**

a projectile is fired with an initial speed of 53 m/s. Find the angle of projection such that the maximum height of the projectile is equal to its horizontal range
*Sunday, September 23, 2012 at 9:19pm by Amanda and Travis*

**Intermediate Algebra**

If a projectile is fired straight upward from the ground with an inital speed of 96 feet per second, then its height (h) in feet after t seconds is given by the equation h(t)=-16t^2+96t Find the maximum height of the projectile.
*Sunday, April 22, 2012 at 2:47pm by Ralph*

**physics**

A projectile is fired from the ground level with initial velocity of 90m/s at an angle of 36degre from horizontal. find the magnitude and direct of projectile 5 secs after firring
*Saturday, February 6, 2010 at 7:37am by Anonymous*

**physics**

A projectile is fired from the ground level with initial velocity of 90m/s at an angle of 36degre from horizontal. find the magnitude and direct of projectile 5 secs after firring
*Saturday, February 6, 2010 at 7:38am by Anonymous*

**physics**

a projectile is fired from the surface of the earth with a speed of 200 m/s at an angle of 30 degrees above the horizontal. If the ground is level, what is the maximum height reached by the projectile
*Sunday, September 25, 2011 at 6:03pm by Anonymous*

**physics**

a projectile is thrown from the ground with an initial velocity of 20.0 m/s at an angle of 40.0 degrees above the horizontal. find the projectile's maximum height, the time required to reach its maximum height, its velocity at the top of the trajectory, the range of the ...
*Monday, February 10, 2014 at 12:32pm by Anonymous*

**Physics**

A model rocket is launched straight upward with an initial speed of 47.8 m/s. It accelerates with a constant upward acceleration of 1.83 m/s2 until its engines stop at an altitude of 163 m. What is the maximum height reached by the rocket?
*Wednesday, September 14, 2011 at 4:43pm by Wing *

**physics**

A model rocket is launched straight upward with an initial speed of 50.2 m/s. It accelerates with a constant upward acceleration of 2.12 m/s2 until its engines stop at an altitude of 167 m. What is the maximum height reached by the rocket?
*Friday, August 31, 2012 at 2:52pm by NICOLE*

**physics **

A model rocket is launched straight upward with an initial speed of 51.3 m/s. It accelerates with a constant upward acceleration of 1.82 m/s2 until its engines stop at an altitude of 150 m. What is the maximum height reached by the rocket?
*Thursday, September 19, 2013 at 4:28pm by Jasmine*

**physics**

A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket?
*Thursday, January 23, 2014 at 6:11pm by sam*

**phys**

a projectile is launched at 35 degrees above the horizontal with an initial velocity of 120m/s. What is the projectile's speed 3 seconds later? Figure the new vertical velocity at t=3. then the speed as equal to sqrt(Vv^2+ Vh^2) The other way to do this is figure how high it ...
*Monday, June 19, 2006 at 7:47pm by slien*

**Physics**

A projectile is fired such that its horizontal range is equal to 2.5 times its maximum height. Find the angle the projectile was fired at
*Sunday, March 2, 2014 at 3:00pm by Yera*

**physics 203**

a projectile is thrown with initial speed v0=25.0m/2 at an initial angle with the horizontal ANGLE=45 degrees. a. find the time when the projectile is at the maximum height. b. find the position(x,y) at the maximum height. c. at time T, find the components of the acceleration ...
*Friday, February 22, 2013 at 5:20pm by ash*

**physics**

A projectile is shot at an angle of 40.0 degrees with a velocity of 25.0 m/s. If a building is 50.0 m away, will this projectile strike the building, and if so, at what height?
*Wednesday, February 15, 2012 at 4:52pm by Anonymous*

**Physics**

A projectile is ﬁred straight upward at 167 m/s. How fast is it moving at the instant it reaches the top of its trajectory? Answer in units of m/s How fast is it moving at the instant it reaches the top of its trajectory if the projectile is ﬁred upward at 13&#...
*Thursday, November 29, 2012 at 8:47am by Big Poppa Smurf*

**Physics**

The projectile motion is fired with velocity of magnitude vo at the angle feta. Find feta for which the maximum elevation of the projectile is twice its range
*Thursday, September 22, 2011 at 3:29pm by Whitney*

**Physics**

The projectile motion is fired with velocity of magnitude vo at the angle feta. Find feta for which the maximum elevation of the projectile is twice its range
*Thursday, September 22, 2011 at 3:30pm by Whitney*

**PHYSICS**

A projectile is fired from the surface of the Earth with a speed of 150 meters per second at an angle of 45 degrees above the horizontal. If the ground is level, what is the maximum height reached by the projectile?
*Monday, October 1, 2012 at 6:03pm by Liz*

**Physics**

A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the other side of the peak, as illustrated in Figure 3-29. If the ship shoots the projectile with an initial velocity of v = 248 m/s at an angle of θ...
*Friday, March 22, 2013 at 8:39pm by Nicola*

**Physics**

A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the other side of the peak, as illustrated in Figure 3-29. If the ship shoots the projectile with an initial velocity of v = 248 m/s at an angle of θ...
*Friday, March 22, 2013 at 8:41pm by Nicola*

**physics**

A potato launcher is launched at a 36 degree angle. The time the potato is in the air is 2.87 seconds and it goes 190 feet. How do I calculate the instant muzzle velocity at which it is launched?
*Tuesday, January 26, 2010 at 6:27pm by Anonymous*

**trig**

whats the horizontal distance traveled by a model rocket launched with an intitial speed of 120 feet per second when the rocket is launched at an angle of 60 degrees
*Friday, September 9, 2011 at 11:31am by hanna tret*

**AP PYHSICS**

A projectile is fired from the surface of the Earth with a speed of 150 meters per second at an angle of 45 degrees above the horizontal. If the ground is level, what is the maximum height reached by the projectile?
*Monday, October 1, 2012 at 6:02pm by Liz*

**Physics**

A projectile is shot from the edge of a cliff h = 225 m above ground level with an initial speed of v0 = 155 m/s at an angle of 37.0° with the horizontal a. Determine the time taken by the projectile to hit point P at ground level. b. Determine the range X of the projectile as...
*Saturday, September 17, 2011 at 8:58pm by Bridge*

**Math**

A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the coordinates of the ...
*Sunday, September 8, 2013 at 11:33am by Sarah*

**Physics **

A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the coordinates of the ...
*Sunday, September 8, 2013 at 11:37am by miley*

**physics**

One projectile is launched horizontally while another is dropped from rest at the same time. Which will hit the floor first?
*Monday, November 16, 2009 at 2:13am by nina*

**Physics**

A cannon fires a projectile into the air at an angle of 60degrees above the horizontal. The projectile falls back on the ground at a distance d from the cannon and its maximum height is h. Ratio d/h is equal to:
*Saturday, May 12, 2012 at 10:36pm by Zess*

**college alg**

The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height, v0 is the initial velocity, and t is the time. Find the time for a projectile to return to Earth if it has an initial velocity of 184 ft/s.
*Tuesday, April 8, 2014 at 12:35pm by kmill*

**Science**

A model rocket is launched straight upward with an initial speed of 30.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 160 m. A. what is the maximum height reached by the rocket? B. how long does the rocket stay ...
*Saturday, September 4, 2010 at 11:18pm by Taylor*

**college alg.**

The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height, v0 is the initial velocity, and t is the time. Find the time for a projectile to return to Earth if it has an initial velocity of 184 ft/s. ____________ s
*Tuesday, April 8, 2014 at 11:32am by Kmil*

**physics i really need help :(**

A projectile is fired with an initial speed of 61.3m/s at an angle of 31.5° above the horizontal on a long flat firing range. a)Determine the maximum height reached by the projectile. b)Determine the total time in the air. c)Determine the total horizontal distance covered (...
*Saturday, November 24, 2012 at 8:19pm by juanita*

**AP Physics - Work and Energy**

A projectile is fired at an upward angle of 45 degrees from the top of a 265-m cliff with a speed of 185 m/s. What will be its speed when strikes the ground below? (Use conservation of energy.) I have a diagram of it but I don't know what equations to use. Help?
*Thursday, October 15, 2009 at 9:20pm by Henry*

**physics**

A plane, diving with constant speed at an angle of 51.5° with the vertical, releases a projectile at an altitude of 654 m. The projectile hits the ground 6.40 s after release. (a) What is the speed of the plane? (b) How far does the projectile travel horizontally during its ...
*Sunday, September 2, 2012 at 8:29pm by gg*

**physics**

A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero
*Sunday, November 28, 2010 at 7:44pm by Tracey*

**physics**

A projectile is launched at 45 degrees above the horizontal plane, How fast is it moving at the top of its curved trajectory? 141m.s?
*Thursday, September 29, 2011 at 6:35pm by Anonymous*

**physics**

A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. What...
*Tuesday, November 16, 2010 at 5:12am by kayla*

**physics**

A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. What...
*Tuesday, November 16, 2010 at 5:13am by kayla*

**algebra**

A launched rocket has an altitude, in meters,give n by the polynomial h+vt-4.9t^2, where h is the height, in meters, from which the rocket is airborne. If a rocket is launched from the top of the tower 90 meters high with an initial upward speed of 50 meters per second, what ...
*Tuesday, May 15, 2012 at 9:59pm by rr*

**physics**

A model rocket is launched straight upward with an initial speed of 45.4 m/s. It accelerates with a constant upward acceleration of 2.98 m/s 2 until its engines stop at an altitude of 150 m. What is the maximum height reached by the rocket? The acceleration of gravity is 9.81 ...
*Sunday, October 2, 2011 at 11:32am by ben*

**Physics**

A projectile is fired at v0 = 394.0 m/s at an angle of θ = 68.7o with respect to the horizontal. Assume that air friction will shorten the range by 28.1%. How far will the projectile travel in the horizontal direction, R?
*Sunday, December 2, 2012 at 9:01pm by Mike*

**physics**

A spherical non-rotating planet (with no atmosphere) has mass 4 kg and radius 9000 km. A projectile of mass is fired from the surface of the planet at a point with a speed at an angle with respect to the radial direction. In its subsequent trajectory the projectile reaches a ...
*Friday, December 6, 2013 at 2:33pm by juanpro*

**Physics**

A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 31.0 m above sea level, directed at an angle q above the horizontal with an unknown speed v0. a. The projectile remains in flight for 6.00 ...
*Thursday, November 5, 2009 at 5:33pm by Anonymous*

**college physics**

When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact c)direction of the ...
*Wednesday, April 18, 2012 at 1:08am by CLARE*

**college physics**

When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion? a)the direction of the acceleration vector just before impact b)direction of the velocity vector just before impact c)direction of the ...
*Wednesday, April 18, 2012 at 4:55am by CLARE*

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