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April 20, 2014

Search: bullet

Number of results: 1,290

physics
A 2.00 g lead bullet traveling at 650 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0C. Find the available kinetic energy of the bullet. Find the heat required to melt the bullet (both answers in J)
Friday, December 6, 2013 at 2:24pm by angela

Physics
A 0.030-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 700 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Sunday, October 24, 2010 at 4:48pm by Xavier

Physics
A 0.012-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 670 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Tuesday, January 11, 2011 at 4:14pm by Tom Atlus

Physics
A 0.014 kg bullet is fired straight up at a falling wooden block that has a mass of 4.0 kg. The bullet has a speed of 760 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Monday, October 22, 2012 at 7:51pm by Elizabeth

Physics
A 50g bullet strikes a stationary 1.50kg block of wood paced on a horizontal surface just in front of the gun. The bullet becomes embedded in the block and the impact drives them a distance of 10m before they come to rest. If the coefficient of kinetic friction between the ...
Wednesday, May 9, 2012 at 9:13pm by Sarah

physics
When a bullet leaves a barrel of a rifle, it is moving 640 m/s. If the barrel is 1.20 m long, and if the bullet undergoes constant acceleration while within the barrel, how long after the rifle is fired will the bullet emerge from the end of the barrel?
Friday, January 31, 2014 at 1:10am by Chavez

Physics-Help Please!
a 25gram bullet is fired upward through a .36kg block. the block goes up 17cm in the air and the bullet goes up 24m into the air. What is the initial velocity of the bullet?
Saturday, October 12, 2013 at 9:25am by Sara

Physics
A 0.0122-kg bullet is fired straight up at a falling wooden block that has a mass of 2.17 kg. The bullet has a speed of 813 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the ...
Sunday, October 13, 2013 at 2:27pm by Briana

physics
Hey, the bullet is not falling in the direction of the initial velocity. The bullet is falling due to gravity, downward, falling for a distance of 1.8 meters. You do the vertical falling distance to get time in the air, then use that time to calculate how far horizontally the ...
Monday, December 7, 2009 at 5:12pm by bobpursley

physics
at on time, the velocity of a rifle bullet was measured using a ballistic pendulum made up of a wooden block suspended from a string. the block used here has a mass of 20kg. a 50g rifle bullet is fired into the block, penetrating it by 10cm and causing it to swing upwards, ...
Thursday, September 2, 2010 at 11:33am by dave

science
A rifle bullet travels 5000 feet in 4 seconds. what is the speed of the bullet?
Thursday, February 24, 2011 at 5:41pm by Mary

math
a bullet travels 1000 m in 1.17 seconds. what is the speed of the bullet
Saturday, September 24, 2011 at 4:06pm by mary

science
A force of 3.0 N is applied to an 8.0 gram rifle bullet. What is the bullets acceleration?
Wednesday, January 30, 2013 at 2:15pm by tash

Physics
A 5-gram bullet going 200m/s hits a 40-gram "tin can" resting on a fence post. The bullet passes through the can emerging with a speed of 160m/s in the same direction. How fast, in the same direction, does the can go after the bullet has passed through.
Thursday, April 26, 2012 at 9:51pm by Sarah

Physic
A bullet with a mass of 4.0 g and a speed of 736 m/s is fired at a block of wood with a mass of 0.075 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, the speed of the ...
Friday, October 19, 2012 at 12:12pm by Hey

physics
A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. ...
Thursday, September 23, 2010 at 7:20pm by jen

Momentum
A 4.4 g bullet is fired into a block of wood with a mass of 21.3 g. The wood block is initially at rest on a 1.3 m tall post. After the collision, the wood block and bullet land 2.4 m from the base of the post. Find the initial speed of the bullet.
Wednesday, May 16, 2012 at 6:43pm by Lui

Physics
A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 378 N/m.  The maximum compression of the spring is 13.5 centimetres.   a)  What was the initial speed of the bullet in m/s? b)  ...
Thursday, November 22, 2012 at 11:59pm by Alphonse

Physics
A 12.8 gram bullet embeds itself in a 2.370 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 487 N/m. The maximum compression of the spring is 11.0 centimetres. a) What was the initial speed of the bullet in m/s? b) How long ...
Thursday, November 29, 2012 at 8:10pm by Jalopy

Physics
You have been asked to design a "ballistic spring system" to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. The block, with the embedded bullet, then slides across a frictionless table and collides with a horizontal spring whose spring ...
Sunday, March 23, 2014 at 8:38pm by Marie

physics
Can someone tell me if my answers are correct? A .145 kg block of wood hangs from the ceiling by a string. A bullet with a mass of .004 kg and a speed of 540 m/s strikes the block. After the collision, the block with the bullet embedded rises 42 cm up. a) What is the velocity ...
Wednesday, October 13, 2010 at 12:26am by Anonymous

physics
A uniform thin rod of length 0.55 m and mass 5.5 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is a rest when a 3.0-g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the ...
Wednesday, April 9, 2014 at 12:33pm by Tsion

physics
a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?
Saturday, October 30, 2010 at 5:41pm by Ashleigh

physics
a bullet is fired at 660 m/s and strikes a target 200 meters away. what is the duration of the bullet?
Wednesday, February 15, 2012 at 9:20pm by Anonymous

physics
From the top of a tall building, a gun is fired. The bullet leaves the gun at a speed of 340 m/s, parallel to the ground. As the drawing shows, the bullet puts a hole in a window of another building and hits the wall that faces the window. h is 0.50 m and d is 7.9 m. Assume ...
Monday, October 25, 2010 at 1:54am by Anonymous

Physics
while at the shooting range, jonathan shoots a bullet traveling horizontally with speed of 35 m/s. the bullet hits a board, perpendicular to the surface, passes through it and emerges on the other side with speed of 21 m/s. if the board is 4.00cm thick, how long does the ...
Thursday, September 19, 2013 at 10:34pm by lian

Physics
A force of 2.3 N is exerted on a 6.6 g rifle bullet. What is the bullet's acceleration
Monday, June 9, 2008 at 5:51pm by j

physics
A force of 3.4 n is exerted on a 7.8 g rifle bullet.what is the bullet acceleration in m/s^2?
Sunday, September 30, 2012 at 3:08pm by tina

Physics
A bullet of mass 3.3 10-3 kg moving at 750 m/s impacts with a large fixed block of wood and travels 5 cm before coming to rest. Assuming that the deceleration of the bullet is constant, find the force exerted by the wood on the bullet? I am confused on how to do this last ...
Saturday, November 13, 2010 at 4:42pm by MeganErin

PHYSICS HELP!!!!!
First calculate the momentum of the block with the bullet hole in it. Ignore the mass loss of wood, since they provide no information on it. 0.007*Vb = Total Momentum after bullet passes through = 195*.007 + sqrt(2*g*H)*1.5 Solve for Vb, the initial bullet velocity H = 0.12 m ...
Monday, October 31, 2011 at 11:29pm by drwls

Physics - Dynamics in two dimensions
The fall time of the bullet is t = (5 m/s)/g = 0.510 s If you assume the bullet does not slow down, it travels 300 m/s * 0.510 s = 153 m So you are correct. The bullet actually will slow down somewhat due to aerodynamic drag, but neglecting the drag on bullets is not a bad ...
Saturday, December 4, 2010 at 3:00am by drwls

Physics-Help Please!
assuming the loss of momentum of the bullet equals the gain of momentum of the block.... when the bullet leaves the block, it travels 24m 1/2 mv'^2=mgh h=24m m is mass of bullet, M is mass block, v' is the velocity of bullet leaving the block. solve for v' Now, the block. 1/2 ...
Saturday, October 12, 2013 at 9:25am by bobpursley

HS physics
A drawing shows a device that can be used to measure the speed of a bullet. The device consists of two rotating disks, separated by a distance of d = 0.790 m, and rotating with an angular speed of 65.0 rad/s. The bullet first passes through the left disk and then through the ...
Sunday, October 24, 2010 at 12:14pm by Sarah

Physics
An 8.00 g bullet is fired into a 250 g block that is initially at rest at the edge of a table of 1.00 m height (Fig. P6.26). The bullet remains in the block, and after the impact the block lands 2.00 m from the bottom of the table. Determine the initial speed of the bullet.
Sunday, November 21, 2010 at 9:06pm by having trouble

physics
which will be more effective in knocking a bear down (a)A RUBER BULLET OR (b)a lead bullet of the same momentum.
Wednesday, June 18, 2008 at 12:08pm by aman

physics
A bullet of mass 10.8 g leaves a gun barrel with a velocity of 511 m/s. What is the bullet's kinetic energy?
Monday, March 7, 2011 at 4:49pm by cale

Physics
a rifle is fried from the top of a building 220 meters high with an initial velocity of 425 m/s at an angle of 12.0 degrees above the horizontal. a. how long will it take for the bullet to reach the ground? b. how far from the base of the building will the bullet strike the ...
Sunday, November 7, 2010 at 9:16pm by Anna

Physics
A bullet with mass 4.91 g is fired horizontally into a 1.981-kg block attached to a horizontal spring. The spring has a constant 6.25 102 N/m and reaches a maximum compression of 6.38 cm. a) find the initial speed of the bullet-block system. b) find the speed of the bullet
Wednesday, June 1, 2011 at 7:48pm by kate

physics
A bullet with mass 4.95 g is fired horizontally into a 1.994 kg block attached to a horizontal spring. The spring has a constant 5.58 10^2 N/m and reaches a maximum compression of 6.27 cm. (a) Find the initial speed of the bullet-block system. (b) Find the speed of the bullet.
Tuesday, March 4, 2014 at 10:06pm by Anonymous

physics
A device is designed to measure the speed of a bullet. The device consists of two rotating disks, separated by a distance of d=0.850m, and rotating with an angular speed of 95.0 rad/s. The bullet first passes through the left disk and the through the right disk. It is found ...
Thursday, January 3, 2008 at 3:55pm by ajo

Physics
A bullet with a mass m=12.5 g and speed v=85.4 m/s is fired into a wooden block with M=113 g which is initially at rest on a horizontal surface. The bullet is embedded into the block. The block-bullet combination slides across the surface for a distance d before stopping due ...
Thursday, October 25, 2012 at 6:45pm by Devin

Bobpursely
Use conservation of momentum to get the initial velocity of the block with imbedded bullet. Then set the initial kinetic energy of block & bullet equal to the work done against friction, and solve for trhe sliding distance. Check to make sure the bullet weight is really 5 kg. ...
Thursday, January 27, 2011 at 7:34pm by drwls

Physics
A bullet of mass 4.8 g strikes a ballistic pendulum of mass 3.3 kg. The center of mass of the pendulum rises a vertical distance of 9.7 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed. ....I'm getting an answer of 3002.05m/s ...
Monday, October 31, 2011 at 9:32am by Ellie

physics
An 8 g bullet is shot into a 4.0 kg block, at rest on a frictionless horizontal surface. The bullet remains lodged in the block. The block moves into a spring and compresses it by 3.7 cm. The force constant of the spring is 2500 N/m. In the figure, the initial velocity of the ...
Monday, March 31, 2014 at 9:36am by Georgey

physics
The momentum of the bullet: massbullet*velocity that has to equal the momentum of the block and bullet combination at impact(mblock+massbullet)V set them equal, and solve for V. Now, the initialKE of the block and bullet combination is 1/2 (totalmass)V^2 set that equal to the ...
Thursday, December 9, 2010 at 3:22pm by bobpursley

Physics
An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)
Friday, September 21, 2012 at 8:26pm by Ellie

Physics
An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)
Friday, September 21, 2012 at 8:28pm by Ellie

physics
F*x = 1/2*m*v^2 where F is the average force, x is the distance over which the bullet is accelerated, v is the speed, m is the mass of the bullet F*0.432 = 1/2*22*907^2
Friday, December 14, 2012 at 8:58pm by Jennifer

Physics
300 yards = 900 ft So, the bullet gets there in 0.32 seconds. How far does the bullet fall in that time? s = 1/2 at^2
Saturday, June 15, 2013 at 9:01pm by Steve

AP Physics
A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the direction of...
Friday, February 8, 2008 at 6:10pm by Darlene

physics
The spring's potential energy at maximum compression (when X is the amplitude of viration) equals the initial kinetic energy at zero deflection, after the bullet hits. Use that fact to get the initial velocity of the vibrating Bullet-Block combo. Then use conservation of ...
Tuesday, April 13, 2010 at 12:12pm by drwls

Physics
A horizontal rifle is fired at a target 47 m away. The bullet falls vertically a distance of 8 cm on the way to the target. (a) What is the speed of the bullet just after it left the rifle? (b) What is the speed of the bullet just before it hits the target?
Wednesday, May 16, 2012 at 11:41pm by Alex

Physics
In a target shooting game, wooden blocks are thrown into the air and shot in flight. A block of 0.8kg has a speed of 10 m/s at the top of its trajectory when it is hit by a bullet from below at an angel 60 from horizontal. The mass of the bullet is 5.0 g and its speed is 550m...
Monday, March 4, 2013 at 7:06pm by Mike

Physics
In a target shooting game, wooden blocks are thrown into the air and shot in flight. A block of 0.8kg has a speed of 10 m/s at the top of its trajectory when it is hit by a bullet from below at an angel 60 from horizontal. The mass of the bullet is 5.0 g and its speed is 550m...
Monday, March 4, 2013 at 7:26pm by Mike

physics
work done by block/bullet= totalmass*g*mu*distance from that, compute the initial velocity of the block/bullet system (workdone=1/2 mv^2) Now, knowing that velocity, use the conservation of momentum to find the initial velocity of the bullet massbullet*vbullet= totalmass*...
Tuesday, November 8, 2011 at 1:12pm by bobpursley

physics
A ballistic pendulum, as shown in the figure, was a device used in the past century to measure the speed of bullets. The pendulum consists of a large block of wood suspended from long wires. Initially, the pendulum is at rest. The bullet strikes the block horizontally and ...
Tuesday, March 4, 2008 at 11:59am by shelby

Physics
A ballistic pendulum was a device used in the past century to measure the speed of bullets. The pendulum consists of a large block of wood suspended from long wires. Initially, the pendulum is at rest. The bullet strikes the block horizontally and remains stuck in it. The ...
Friday, October 26, 2012 at 2:35pm by Jeff

physic =)
A bullet is fired directly upward from a rifle at ground level. Assuming a velocity muzzle of 490 m/s, and neglecting air resistance, find: A.height of the highest point reached. B.time required to reach this point. C.total time before the bullet returns to the ground. D.speed...
Sunday, January 6, 2013 at 7:05am by carol

Physics
A bullet of mass 0.06kg is fired horizontally with a muzzle speed of 700 m/s into a pendulums hanging block of mass 2.0kg. The block and the bullet then move up a height, h, above the pendulums equilibrium position. What is the speed of the bullet/block combination after the ...
Thursday, March 15, 2012 at 4:31pm by Erin

physics
A bullet of mass 10.8 g leaves a gun barrel with a velocity of 511 m/s. What is the bullet's kinetic energy? answer in joules
Monday, March 7, 2011 at 4:50pm by mat

emu
Assuming the gun/bullet combo was initially at rest, conserve momentum to get (.21)(v) + (5.6)(-2.5) = 0 I think that's a heavy, slow bullet!
Wednesday, November 6, 2013 at 11:47pm by Steve

Physics
A hunter aims directly at a target (on the same level) 125m away. If the bullet leaves the gun at a speed of 227 m/s, by how much will it miss the target? I'm not sure how to approach this problem. I know I need to find the horizontal distance traveled, probably by finding the...
Thursday, June 3, 2010 at 6:42pm by Jeff

Physics
a) By "initial speed", they really mean "right after the bullet hits the block and gets embedded". Call that speed v. The bullet-block speed is zero before that. Assume energy is conserved during spring compression. (1/2)(M+m) v^2 = (1/2)k*X^2 v = sqrt [k/(M+m)]*X = sqrt[625/1...
Wednesday, June 1, 2011 at 7:48pm by drwls

Physics
A wooden boxcar is moving along a straight railroad track at speed v1. A sniper fires a bullet (initial speed v2) at it from a high-powered rifle. The bullet passes though both lengthwise walls of the car, its entrance and exit holes being exactly opposite each as viewed from...
Saturday, September 18, 2010 at 7:11pm by J

physics
bullet of mass 15 gm is shot horizontally into a 15 kg block of wood attached to a spring of spring constant 1000 N/m. The bullet remains inside the block after impact. The force of the impact compresses the spring 10 cm. What is the velocity of the bullet?
Sunday, December 2, 2012 at 3:49pm by Jd

AP Physics
A bullet of mass 0.0022 kg moving at 568 m/s impacts a large fixed block of wood and travels 5.2 cm before coming to rest. Assuming that the deceleration of the bullet is constant, find the force exerted by the wood on the bullet. Answer in units of kN Please show ...
Tuesday, October 2, 2012 at 8:32pm by Noah

Physics
A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. ...
Monday, September 20, 2010 at 9:31am by Eric

physics
here is my question: A bullet with a mass of 6.00 g is fired through a 1.25 kg block of wood on a frictionless surface. The initial speed of the bullet is 896 m/s, and the speed of the bullet after it exits the block is 435 m/s. At what speed does the block move after the ...
Wednesday, March 11, 2009 at 6:38pm by physics

physics
A bullet is shot straight upwards .It takes 18 seconds to reach the highest point in its trajectory.what was bullet maximum speed?
Thursday, March 3, 2011 at 11:44am by sweety

phycis
a bullet of mass 0.01kg is fired into a sandbag of mass 0.49kg handing from atree.the sandbag with the bullet embedded into it swing away at 10m/s find: a.the momentum after collision b.the momentum before the collision c.the velocity of the bullet
Friday, February 15, 2013 at 4:43am by najma

physics
A 3.00x10^-3 kg lead bullet enters a target with a speed of 2.00x10^2 m/s and comes to rest within the target. Calculate the rise in temperature of the bullet assuming that 80.0% of the heat produced is absorbed by the bullet. The Specific heat of lead is 1.30x10^2 J/kg K
Sunday, March 25, 2012 at 3:00pm by Elizabeth

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

Physics
A 10 kilogram block initially hangs at rest at the end of two 10 meter strings of negligible mass as shown on the left diagram above. A 0.009 kilogram bullet, moving horizontally with a speed of 1600 meters per second, strikes the block and becomes embedded in it. After the ...
Sunday, November 27, 2011 at 9:45pm by jill

Physics
A 0.5 kg wooden block is dropped from a height of 15 m. At what height must a 5g bullet be traveling upward strike the block in order to momentarily stop its fall? Assume that the time required for the bullet to come to rest in the block in negligibly short, that no internal ...
Wednesday, January 22, 2014 at 3:43pm by Christina

Collisions
Suppose a bullet of mass m = 6.96 g is fired into a ballistic pendulum whose bob has a mass of M = 0.677 kg. (a) If the bob rises to a height of 0.141 m, what was the initial speed of the bullet? I got .042 km/s; but its wrong. (b) What was the speed of the bullet-bob ...
Thursday, April 29, 2010 at 7:03pm by Robert

physics
A 4.63-g bullet is moving horizontally with a velocity of +349 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Saturday, October 15, 2011 at 12:48am by riley

physics
A 4.63-g bullet is moving horizontally with a velocity of +349 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Sunday, October 16, 2011 at 9:33pm by riley

physics
A 4.15-g bullet is moving horizontally with a velocity of +369 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Friday, November 4, 2011 at 11:52am by Meagan

physics
A 4.15-g bullet is moving horizontally with a velocity of +369 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Friday, November 4, 2011 at 4:15pm by Meagan

phisics
A 7.45-g bullet is moving horizontally with a velocity of +348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Sunday, November 4, 2012 at 9:46pm by greg

Physics
A 7.45-g bullet is moving horizontally with a velocity of +348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Monday, November 5, 2012 at 2:24am by greg

physics
A 6.26-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
Thursday, March 27, 2014 at 1:35pm by Anonymous

physics
mass of block with bullet = 2+.020 =2.02 kg weight of block with bullet = 2.02*9.81 = 19.8 N friction force = 19.8*.2 = 3.96 N work done by friction = 3.96 * .40 = 1.59 J that is kinetic energy of block with bullet 1.59 = (1/2)(2.02) v^2 v = 1.25 m/s for block with bullet now ...
Monday, July 23, 2012 at 12:55pm by Damon

Physics
from the final height, the PE gained was (m+M)gh (m is the bullet mass). So the initial velocity of the bullet/block must be 1/2 (m+M)v^2=(m+M)gh or V=sqrt(2gh) Now the law of momentum conservation holds when the bullet hits the block (m+M)V=mVi (m+M)sqrt(2gh)=mVi and solve ...
Friday, August 5, 2011 at 2:19pm by bobpursley

Physics
Situation: While holding his rifle at shoulder-level, a 1.8 meter tall hunter accidentally discharges it straight up into the air. Questions: 1) If the bullet exits the barrel of the rifel at 200 meters per second squared, how many seconds does the hunter have to "step aside" ...
Monday, February 11, 2013 at 5:05pm by Krishen

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

Science
A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0C. Assume that no heat is lost to the surroundings and that all the kinetic energy of the bullet is ...
Tuesday, December 6, 2011 at 9:40pm by Michael

medical office administration
A man is shot in the head, and the bullet stops just outside the dura mater.what is the innermost layer that the bullet has penetrated
Wednesday, February 3, 2010 at 2:31pm by Peggy miller

Transistion to College Math
A rifle bullet is fired vertically with initial speed 490 m/s. how long does it take the bullet to reach its greatest height?
Wednesday, March 28, 2012 at 2:27am by Mike

physics
A 4 g bullet leaves the muzzle of a riffle with a speed of 350 m s-1. What force is exerted on the bullet when it is travelling down the 0.85 m long barrel of the rifle?
Saturday, July 6, 2013 at 9:59am by haziq

chemistry
A certain rifle bullet has a mass of 6.45 g. Calculate the de Broglie wavelength of the bullet traveling at 1817 miles per hour.
Friday, November 1, 2013 at 3:46pm by brianna

chemistry
a certain riffle bullet has a mass of 6.45 g. calculate the de broglie wavelength of the bullet traveling at 1817 miles per hour.
Friday, November 1, 2013 at 3:46pm by carlene

Physics
well, exactly opposite.That means the time the bullet went across the car, the train advanced the same distance as the angle of the bullet would have advanced. Assume Theta is the angle the bullet entered. Hmmmm. to figure the time the bullet took to cross the car, one needs ...
Saturday, September 18, 2010 at 7:11pm by bobpursley

physics
A bullet is fired from a rifle that is held 4.6 m above the ground in a horizontal position. The initial speed of the bullet is 1130 m/s. There is no error in the velocity value. (a) Find the time it takes for the bullet to strike the ground. (b) Find the horizontal distance ...
Tuesday, September 18, 2012 at 7:06pm by Taylor

Physics
A bullet moving at a speed of 154 m/s passes through a plank of wood. After passing through the plank, its speed is 149 m/s. Another bullet, of the same mass and size but moving at 91 m/s, passes through an identical plank. What will this second bullet's speed be after passing...
Wednesday, January 23, 2013 at 7:29pm by Andrew

Physics
A bullet moving at a speed of 154 m/s passes through a plank of wood. After passing through the plank, its speed is 149 m/s. Another bullet, of the same mass and size but moving at 91 m/s, passes through an identical plank. What will this second bullet's speed be after passing...
Wednesday, January 23, 2013 at 7:30pm by Andrew

Physics
Hello im kinda new here and hoping someone can help me with this energy conservation question (I believe). A 2.10g- bullet embeds itself in a 1.30kg - block, which is attached to a spring of force constant 770 N/m . 1) If the maximum compression of the spring is 5.60 cm , find...
Thursday, November 19, 2009 at 11:22am by Charles

Physics help please
A 13.2 gm bullet is fired into a 12.0 kg wood block that is at rest on a wood table. The block, with the embedded bullet, slides 5.00 cm across the table. Assuming that the local acceleration due to gravity is 9.80m/s2 and that the coefficient of kinetic friction between the ...
Wednesday, October 26, 2011 at 11:09pm by Iamdumb

phys
A 30.0-g lead bullet leaves a rifle at a temperature of 89.0 C and hits a steel plate. If the bullet melts, what is the minimum speed it must have?
Thursday, April 26, 2012 at 12:29am by opp

physics
An 10g bullet leaves a gun at 800 m/s. What is the maximum distance that the bullet could reach? What is the height it reaches when the angle above the horizontal is 45 degrees
Tuesday, September 25, 2012 at 1:16am by Anonymous

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