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April 25, 2014

Search: a marksman at rest fires a 4.0 kg gun that expels a bullet of mass .0140 kg with a velocity of 181 m/s the marksman

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physics repost
A marksman at rest fires a 4.00-kg gun that expels a bullet of mass 0.0140 kg with a velocity of 181 m/s. The marksman's mass is 81.0 kg. What is the marksman's velocity after firing the gun? mc = 85kg md = 0.0140 -(0.0140)(-181)/85 = .0298 m/s
Thursday, April 3, 2008 at 9:33am by Jon

physics
A marksman at rest fires a 4.00-kg gun that expels a bullet of mass 0.0140 kg with a velocity of 181 m/s. The marksman's mass is 81.0 kg. What is the marksman's velocity after firing the gun? mc = 85kg md = 0.0140 -(0.0140)(-181)/85 = .0298 m/s
Wednesday, April 2, 2008 at 11:44pm by Jon

Physics
An observer stands 43.0 m behind a marksmen practicing at a rifle range. The marksman fires the rifle horizontally which gives the speed of the bullet to be 939 m/s. How far does each bullet travel before the observer hears the report of the rifle? Assume that the bullet ...
Sunday, March 13, 2011 at 3:12am by Steph

college
Smokey the Bear celebrated his 65th birthday this year. Why has the message of the forest service that “only you can prevent forest fires” changed in recent years to allow more fires?
Tuesday, March 16, 2010 at 9:55am by Natalie

physics
A tank is moving away from a soldier with a bazooka at a constant velocity of 7.80 m/s. The bazooka fires a missile which accelerates from rest at 23.2 m/s2. The soldier fires the bazooka when the tank is 185 m away. A. How long is the missile in the air? B. How far does the ...
Sunday, October 17, 2010 at 6:46pm by Sara

physics college
A rocket booster fires in space with a force of 500N and moves the 10kg satellite from rest to motion in 2.1 seconds. Find the acceleration? What is the final speed of the satellite?
Tuesday, October 23, 2012 at 11:30pm by Gee

Physics
a 1.75kg pistol lies at rest on an essentially frictionless bench. it accidentally fires and shoots a 25 gram bullet parallel to the bench. How far has the bullet moved by the time the gun has recoiled 2.60mm?
Monday, April 25, 2011 at 2:50pm by dave

Physics
a 1.75kg pistol lies at rest on an essentially frictionless bench. it accidentally fires and shoots a 25 gram bullet parallel to the bench. How far has the bullet moved by the time the gun has recoiled 2.60mm?
Monday, April 25, 2011 at 4:47pm by Cole

physics
Hayes fires a projectile from his air gun. The gun provides a constant 300 N of force on a 0.1 kg projectile as it travels through the 0.3 meter barrel. How fast is it going when it leaves? It starts from rest and there is no friction.
Monday, October 24, 2011 at 6:25pm by JJ

Physic: Projectile Motion
Two rifles are fired at targets, which are 100 m away. The first rifle fires bullets at 1200 ft/s and the second fires a bullet at 3000 ft/s. How long will it take each bullet to get to the target? If both are aimed directly at the bull's-eye, how far will each bullet travel ...
Tuesday, November 26, 2013 at 10:19am by Ngau

Environmental Science
What kind of natural disasters help some forest communities by allowing some trees to release their seeds, by clearing away deadwood, and by encouraging new growth? Look up the effects of forest fires on forest communities. Especially the California Chapparall ecosystem, fire ...
Friday, December 22, 2006 at 10:06pm by Qiayamah

physics
A 2500kg gun fires a 10.0kg projectile with a muzzle speed of 550m/s. A) determine the initial recoil speed of the gun B) If the recoil is against a constant resisting force of 4200N, find the time taken to bring the gun to rest.
Thursday, November 10, 2011 at 4:34pm by b

physics
PLEASE HELP ME SOLVE !!!! InMay 1998, forest fires in southernMexico and Guatemala spread smoke all the way to Austin. Those fires consumed forest land at a rate of 26900 acres/week. On the average, how many square meters of forest are burned down every minute? An acre is an ...
Friday, January 20, 2012 at 12:02am by Ann

Physics
A cannon on a railroad car is facing in a direction parallel to the tracks. It fires a 99 kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60.0° above the horizontal. If the cannon plus car have a mass of 5.5 104 kg, what is the recoil speed of the car if...
Monday, October 22, 2007 at 10:34pm by Dante

Physics Problem; CONVERSIONS
PLEASE HELP ME SOLVE !!!! InMay 1998, forest fires in southernMexico and Guatemala spread smoke all the way to Austin. Those fires consumed forest land at a rate of 26900 acres/week. On the average, how many square meters of forest are burned down every minute? An acre is an ...
Thursday, January 19, 2012 at 11:44pm by Anonymous

Physics Problem; CONVERSIONS
PLEASE HELP ME SOLVE !!!! InMay 1998, forest fires in southernMexico and Guatemala spread smoke all the way to Austin. Those fires consumed forest land at a rate of 26900 acres/week. On the average, how many square meters of forest are burned down every minute? An acre is an ...
Thursday, January 19, 2012 at 11:44pm by Anonymous

physics
A cannon on a railroad car is facing in a direction parallel to the tracks (the figure below ). It fires a 99-kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60 above the horizontal. If the cannon plus car have a mass of 4.6 104 kg, what is the recoil ...
Friday, February 25, 2011 at 7:23am by Renee

physics
A military gun is mounted on a railroad car (m = 1590 kg) as shown in Figure P7.34. There is no frictional force on the car, the track is horizontal, and the car is initially at rest. The gun then fires a shell of mass 26 kg with a velocity of 280 m/s at an angle of 28° with ...
Sunday, October 2, 2011 at 9:34pm by megan

physics
A cannon fires a shell at an angle of 55.0° above the horizontal. The shell has a mass of 17.5 kg, and its initial speed as it leaves the cannon is 289 m/s. The cannon is not anchored to the ground. It is mounted on a base—a large block of wood—which is sitting on a level ...
Monday, November 1, 2010 at 4:03am by becca

Physics
A cannon fires a shell at an angle of 55.0 above the horizontal. The shell has a mass of 17.5kg, and its initial speed as it leaves the cannon is 289m/s. The cannon is not anchored to the ground. It is mounted on a base -a large block of wood- which is sittin go n a level ...
Monday, November 2, 2009 at 4:11pm by John

physics
A spring cannon is fastened to a glider at rest on a horizontal frictionless air track. The combined mass of the cannon and the glider is 0.560kg. The cannon fires a ball with a mass of 50g horizontally at a speed of 14 m/s. How fast does the cannon-glider assembly move ...
Wednesday, March 12, 2014 at 12:55am by Anonymous

physics
a 2 kilogram rifle initially at rest fires a 0.002 kilogram bullet. as the bullet leaves the rifle with a velocity of 500 meters per second, what is the momentum of the rifle bullet system? isn't the answer one because final momentum minus initial momentum is 1-0 which is one
Thursday, January 6, 2011 at 8:43pm by john

physics
a pirate ship fires a 25kg cannonball with a velocity of +100m/s at a very heavy fur trader ship. the ship is at rest. the cannonball bounces off the side of the ship, making a hole. after the collision the cannonball has a velocity of -0.5m/s. assume the water did not absorb ...
Monday, February 28, 2011 at 4:42pm by Allison

Physics
a 123 kg man space finds himself 60 m away from his space ship and wants to get back. he holds a 2kg space gun which fires 5.00g bullet at a rate of 1500m/s. if he fires a single bullet in a direction directly away from the spaceship, how long would it take the man to arrive ...
Sunday, February 21, 2010 at 4:41pm by Gweedo8

PHYSICS
a 123 kg man space finds himself 60 m away from his space ship and wants to get back. he holds a 2kg space gun which fires 5.00g bullet at a rate of 1500m/s. if he fires a single bullet in a direction directly away from the spaceship, how long would it take the man to arrive ...
Monday, February 22, 2010 at 10:30am by Anonymous

Physics
Suppose that you have a spring gun that you use to launch a small metal ball. You try the first two settings of the gun. The first setting compresses the spring by 1 cm and fires the ball a distance of 0.25 m . The second setting compresses the spring by 2 cm and fires the ...
Friday, February 3, 2012 at 11:04pm by Susan

Physics
A 8.00 multiplied by 107 kg battleship originally at rest fires a 1400 kg artillery shell horizontally with a velocity of +550 m/s. (a) If the shell is fired straight aft, there will be negligible friction opposing the ships recoil velocity. Calculate its recoil velocity. (b) ...
Sunday, July 14, 2013 at 9:53pm by Amy

physics
A railway flat car is rushing along a level frictionless track at a speed of 45m/s. Mounted on the car and aimed forward is a cannon that fires 65 kg cannon balls with a muzzle speed of 625m/s. The total mass of the car, the cannon, and the large supply of cannon balls on the ...
Monday, October 10, 2011 at 6:30pm by Alejandro

social studies
What causes wild fires?
Monday, September 21, 2009 at 4:20pm by Gab

LITERARY DEVICES
WHAT DOES "...RAGING FIRES..." MEAN?
Friday, November 5, 2010 at 7:13pm by HA

physics
A dart gun is fired while being held horizontally at a height of 0.90 m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 4.00 m. A college student holds the same gun in a horizontal position while sliding...
Wednesday, September 24, 2008 at 6:23pm by chad

Physics
A dart gun is fired while being held horizontally at a height of 0.90 m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 4.00 m. A college student holds the same gun in a horizontal position while sliding...
Wednesday, September 24, 2008 at 7:03pm by Chad

physics
A dart gun is fired while being held horizontally at a height of 1.00 m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 5.00 m. A college student holds the same gun in a horizontal position while sliding...
Sunday, October 3, 2010 at 4:30pm by ben

English
1. Let's take a rest. 2. Let's take some rest. 3. You should get some rest. 4. You should get a rest. 5. You should rest for a while. Are they all grammatical? Which ones are frequently used?
Tuesday, July 1, 2008 at 11:44pm by John

Physics
2. A solid block of water (m = 10 grams, Ti = -4 degrees Celsius) is shrink wrapped in an ultra thin super plastic (that has absolutely no effect on the interaction between its contents and the surrounding environment) and is placed as ammo inside a spring loaded cannon. The ...
Monday, December 10, 2012 at 11:52pm by Darlynn

Physics
A solid block of water (m = 10 grams, Ti = -4 degrees Celsius) is shrink wrapped in an ultra thin super plastic (that has absolutely no effect on the interaction between its contents and the surrounding environment) and is placed as ammo inside a spring loaded cannon. The ...
Tuesday, December 11, 2012 at 2:58pm by Darlynn

biology
can you provide a simple explanation of how a cell fires or synapses
Monday, October 1, 2007 at 9:27pm by kate

physics
A dart gun is fired while being held horizontally at a height of 1.38m above ground level, and at rest relative to the ground. The dart from the fun travels a horizontal distance of 7.76. A child holds the same gun in a horizontal position while sliding down a 28.8 degrees ...
Saturday, September 4, 2010 at 2:39pm by Mimi

Physics
A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force during the firing. C. ...
Saturday, March 5, 2011 at 6:25pm by Joe

Physics
A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force during the firing. C. ...
Sunday, March 6, 2011 at 11:21am by Ana

I.T
How can you protect your computer from fires, dust extreme temperature and power surges?
Sunday, February 10, 2013 at 11:35am by Sasha

Physics
A missile launcher, mass M, at rest on a horizontal track fires a missile, mass m, horizontally. a) If the launch speed of the missile is v o , what (effective) coefficient of (kinetic) friction is required in order to stop the launcher within x meters? (b) Missile launcher ...
Wednesday, August 8, 2012 at 2:05pm by Chad

Physics
A missile launcher, mass M, at rest on a horizontal track fires a missile, mass m, horizontally. a) If the launch speed of the missile is v o , what (effective) coefficient of (kinetic) friction is required in order to stop the launcher within x meters? (b) Missile launcher ...
Tuesday, August 7, 2012 at 10:36pm by Chad

anatomy and phisiology 1
stimulation of a receptor initiates what event? stimulation of a receptor initiates multiple signal pathways. Specific responses depend on the type receptor. That receptor cell fires, sending an electrical impulse down its length. The type and strength of the stimulation will ...
Friday, December 8, 2006 at 4:29pm by kita

life orientation
in 15 lines fires can be critically in which the human or environmental problem impacts on the community.
Sunday, May 5, 2013 at 1:47pm by Gugu

physics
Discuss what happens when a man fires a pistol in front of a flight of stairs in a large hall.
Sunday, January 29, 2012 at 5:52am by victoria

physics
Hello everyone, I need help with this question: A dart gun is fired while being held horizontally at a height of 1.00m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 5.00m. A college student holds the ...
Tuesday, September 4, 2012 at 7:42pm by Leo

physics
A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of 11000 kg and a length of 49 m. The cannon fires to the right; the car recoils to the left. The cannon balls remain in the car after hitting the wall. ...
Saturday, March 3, 2012 at 12:03pm by Katie

physics
A certain elevator cab has a total run of 204 m and a maximum speed is 321 m/min, and it accelerates from rest and then back to rest at 1.21 m/s2. (a) How far does the cab move while accelerating to full speed from rest? (b) How long does it take to make the nonstop 204 m run...
Tuesday, October 16, 2012 at 7:35am by LIN

physics
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground?
Wednesday, February 2, 2011 at 10:24am by vicki

physics help
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground
Wednesday, February 2, 2011 at 2:16pm by vicki

please help with physics
a gun tilted upward at 30 degrees fires a bullet with a speed of 215 m/s. what is the bullets velocity parallel to the ground
Thursday, February 3, 2011 at 6:50am by vicki

Kinematics algebra question - Physics 11
I don't know how to even approach this... It's suppose to be on my physics test. A huntsman fires a gun pointing at a monkey hanging on the branch of a tree. The huntsman and the base of the tree are on a flat horizontal. At the moment the huntsman fires the gun, the monkey ...
Friday, November 8, 2013 at 12:14am by Raylene

Comm/215
When a police officer fires his gun, he must fill out a lot of paperwork. Correct pronoun errors? I don't see any.
Friday, August 13, 2010 at 8:40pm by Bryce

physics
a trench mortar fires a shell at an angle of 30 degrees with the horizontal and with a speed of 500 m/s. find its range and the maximum height it attains?
Sunday, October 2, 2011 at 9:48am by Gillianne

physics
a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle?
Monday, February 7, 2011 at 5:41pm by sejul

physics
a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle?
Monday, February 7, 2011 at 5:41pm by sejul

english
Do I capitalize French fries as in ...I served french fires on china plates to the ladies.
Wednesday, January 30, 2008 at 7:18pm by dede

physics
2.5 kg rifle fires a 20 g bullet at 400 m/s. Find magnitude of the recoil velocity of the rifle.
Monday, February 7, 2011 at 10:44pm by Anil

science
what, if anything, happens to the speed of a fighter plane when it fires a cannon at an enemy plane in front of it?
Monday, February 19, 2007 at 2:01am by tasha

Physics (1)
A 4.1 kg rifle is suspended by strings and fires a 0.0030 kg bullet at a speed of 1500 m/s. What is its recoil speed in m/s?
Saturday, October 29, 2011 at 3:10pm by Anonymous

english
revise the following sentence to remove all pronoun errors. When a police officer fires his gun, he must fill out a lot of paperwork.
Wednesday, September 30, 2009 at 6:59pm by dee

sience
which of the following is the best way to minimize weathering and erosion? A. building suburbs B. grazing livestock C. setting fires D. replanting vegetation My answer is D am i right?
Thursday, September 15, 2011 at 8:45pm by Lidia

physics
A cannon barrel is elevated at an angle of 45°. It fires a ball with a speed of 350 m/s What is the horizontal range of the cannon?
Thursday, August 25, 2011 at 10:00pm by yelya

Chemistry
A 0.22-caliber handgun fires a 27-{\rm g} bullet at a velocity of 765 {\rm m}/{\rm s}. Part A Calculate the de Broglie wavelength of the bullet.
Saturday, June 30, 2012 at 2:37pm by Anonymous

science
machine fires 5 bullets per sec each of velocity 200m/sec. find power of the gun.
Friday, September 28, 2012 at 11:14am by spandana

physics
a gun fires a shell with a speed of 315m/s. Neglecting the effects of air resistance, calculate the maximum range of this gun
Saturday, October 8, 2011 at 5:26pm by Cam

physics
A 530 cannon fires a 12 cannonball with a speed of 200 relative to the muzzle. The cannon is on wheels that roll without friction.
Wednesday, November 30, 2011 at 3:02pm by Anonymous

Logic
Some forest fires that are not started by campers are conflagrations that are not easily extinguished Why are both the subject term and predicate term undistributed
Wednesday, June 27, 2012 at 5:13pm by Tetia

Englsh
1. Let's break up the wall. 2. Let's break the wall. (What is the difference between the two sentence?) 3. He wanted to get some rest. 4. He wanted to take some rest. (Are both OK? 5. He got rest after working hard. 6. He took a rest after wroking hard. (Do we have to use 'a' ...
Monday, June 4, 2012 at 3:19am by rfvv

Physics
A gatling gun fires at a rate of 2000 rounds per minute. If the bullets travel at a speed of 800m/s, how far apart are the bullets?
Sunday, May 1, 2011 at 10:02pm by Derek

Physics
True or False: If a cannon fires a cannonball in an easterly direction, the tendency of the cannon to move to the west is a result of the principle of conservation of energy.
Tuesday, December 13, 2011 at 8:18pm by David

Chemistry
A 0.22-caliber handgun fires a 27-g bullet at a velocity of 765 m/s. Calculate the de Broglie wavelength of the bullet. Is the wave nature of matter significant for bullets?
Wednesday, March 28, 2012 at 12:40am by danielle

Physics 12 Kinematics
I'm not really sure how to use the algebra to prove the monkey shouldn't have dropped. Obviously if the hunter aimed the gun directlt at the monkey it wouldn't hit it as gravity would pull it down. A huntsman fires a gun pointing at a monkey hanging on the branch of a tree. ...
Friday, November 8, 2013 at 8:47pm by Oscar

principles of pysics
A cannon with a long barrel fires a shell faster because the shell experiences a greater ____________________. A) change in inertia. B) impulse. C) acceleration. D) None of these.
Sunday, February 19, 2012 at 3:57pm by Anonymous

principles of physics
6. A cannon with a long barrel fires a shell faster because the shell experiences a greater ____________________. A) change in inertia. B) impulse. C) acceleration. D) None of these.
Sunday, February 19, 2012 at 5:03pm by britches

physic
A canon is angled at 45º and fires a canon ball at 100 m/s. How long will it take the canon to reach it's maximum height?
Monday, February 4, 2013 at 4:15pm by patrick

physic
A canon is angled at 45º and fires a canon ball at 100 m/s. How long will it take the canon to reach it's maximum height?
Monday, February 4, 2013 at 4:17pm by patrick

COMM215
revising sentences to remove these pronouns When a police officer fires his gun, he mustfill out a lot of paperwork. When a teacher writes an exam, they think about what aspects of students learning they want
Friday, April 9, 2010 at 4:27pm by Jana

physics
A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the skier to go from rest (...
Saturday, November 30, 2013 at 12:55pm by Haffmeister

Physics
A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the skier to go from rest (...
Sunday, December 1, 2013 at 10:26am by Fernandez

physics
A machine gun fires 20 bullets per second in to a target. Each bullet weight 10 gm and has a speed of 1500m/s; Find the Force necessary to hold the gun in position.
Tuesday, September 11, 2012 at 3:29pm by salman

Physics
An antitank weapon fires a 3.0 kg rocket which acquires a speed of 50. m/s after traveling 90. cm down a launching tube. Assuming the rocket was accelerated uniformly, what force acted on it?
Monday, November 26, 2012 at 9:04am by Hussen

francican matric project
Critical discuss 10 ways in which each of the 3 identified environmental health hazards (fires,dumping of wastes and floods)can impact negatively on one,s health.
Saturday, April 13, 2013 at 11:43am by ntombifuthi dunge

Physics
A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the skier to go from rest (...
Thursday, November 28, 2013 at 11:09am by Carter

Physics
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 220 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.5 m/s relative to the shore, and then hops onto an identical floating log that is ...
Wednesday, February 9, 2011 at 5:09pm by hy

PHYSICS
Determine the normal force for a laundry basket with a mass of 5.8 kg in each of the following situations (a) at rest on a horizontal surface (b) at rest on a ramp inclined at 12° above the horizontal (c) at rest on a ramp inclined at 25° above the horizontal (d) at rest on a ...
Saturday, January 12, 2013 at 8:54pm by Meg Peterson

chemistry
If the rocket engine contains 1500.0 grams of H2O2 and an excess of N2H4, what volume of water vapor will be produced when the rocket fires up to a temperature of 540°C and a pressure of 1.2atm?
Tuesday, July 24, 2012 at 7:11pm by Big Trav

Physics
A spaceship with a mass of 4.60 10^4 kg is traveling at 6.30 10^3 m/s relative to a space station. What mass will the ship have after it fires its engines in order to reach a speed of 7.84 10^3 m/s? Assume an exhaust velocity of 4.86 10^3 m/s.
Wednesday, March 5, 2014 at 6:23pm by Anonymous

physics
A man fires a rock of a slingshot directly upward.The rock has an initial velocity of 15m/s.How long will it take for the rock to return to the level he fired it at?
Thursday, April 4, 2013 at 4:06am by Shazz

Helpp plz..
List reasons on why a real estate agent would need a background in geography. Plz help. Im writing a paper on this, but need to get the concept of it all. If a realtor in the Los Angeles area understood the geography of the county and surrounding areas, he/she would know about...
Saturday, February 10, 2007 at 5:25pm by May

Physics
Determine the normal force for a laundry basket with a mass of 4.7 kg in each of the following situations (a) at rest on a horizontal surface _________ N (b) at rest on a ramp inclined at 12° above the horizontal _______ N (c) at rest on a ramp inclined at 25° above the ...
Tuesday, October 23, 2012 at 4:08pm by Dakota

Physics Honors
A cannon fires a cannonball 500 m downrange when sest at a 45° angle. At what velocity does the cannonball leave the cannon?
Friday, December 2, 2011 at 12:23am by Jacqueline

Physics
a 3.5kg rifle fires a 5gram bullet with a muzzle speed of 300m/s. What is the recoil speed of the rifle?
Thursday, April 26, 2012 at 10:29pm by Sarah

physics
a machine gun fires 10 bullets persecond into a target. each bullet weights 20 gm and had a speed of 1500 m per second .find the force neccessary to hold the gun in posotion?
Thursday, April 5, 2012 at 8:59am by sunny

physics
A cannon fires a shell at an angle of 20º to the horizontal. The shell reaches a range of 436 meters, landing at the same elevation as the starting point. What was the initial velocity of the shell
Saturday, October 22, 2011 at 1:18pm by Anonymous

Physics
A gun fires a bullet. When will the muzzle velocity of the bullet be equal to the recoil speed of the gun?
Tuesday, November 15, 2011 at 8:33pm by Shari

Physics
A free nuetron can decay into a proton, an electron, and a neutrino.Assume the neutrino's rest mass is zero, and the rest masses for proton and electron are 1.6726*10^-27 kg and 9.11*10^-31 kg. Determine the total kinetic energy shared among the three particles when a nuetron ...
Monday, April 14, 2008 at 4:13pm by Jenish

physics
A cannon tilted up at a 26.0 degree angle fires a cannon ball at 78.0 m/s from atop a 12.0 m-high fortress wall. What is the ball's impact speed on the ground below?
Monday, March 21, 2011 at 10:38pm by duke

Physics
A cannon tilted up at a 34.0^\circ angle fires a cannon ball at 69.0 m/s from atop a 23.0 m-high fortress wall. What is the ball's impact speed on the ground below?
Thursday, March 29, 2012 at 9:53pm by Cody

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