Sunday

April 20, 2014

April 20, 2014

Number of results: 120,465

**Physics-bullet travel distance**

A bullet is fired at 45 degrees with respect to horizontal with a velocity of 50 m/s. How long is the bullet in the air? What is the range?
*Monday, December 3, 2012 at 7:29pm by daryl*

**Physics help please**

Use the distance that the bullet and block travel after impact (X = 0.0500 m)to get the initial kinetic energy of bullet and block together. (Friction force)*(distance) = (1/2)(M+m) Vo^2 M + m = 12.0132 kg Friction force = (0.190)(M+m) g = 22.37 N Solve for Vo Once you have Vo...
*Wednesday, October 26, 2011 at 11:09pm by drwls*

**Physics**

A bullet of mass 0.02kg is fired at a speed of 500m/s towards a fixed wooden block of thickness 10cm. The bullet penetrates the block and emerges with a speed of 200m/s. a) Find the average retarding force on the bullet when it is passing through the block. b) Estimate the ...
*Sunday, December 5, 2010 at 7:01am by laura*

**physics**

A 18.5 g bullet is fired from a rifle. It takes 2.70 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 660 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
*Wednesday, September 21, 2011 at 6:28pm by Anonymous*

**physics**

A 22.4-g bullet is fired from a rifle. It takes 3.37 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 740 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
*Sunday, October 7, 2012 at 12:13pm by Anonymous*

**Physics**

A 21.3-g bullet is fired from a rifle. It takes 3.77 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 779 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
*Thursday, October 11, 2012 at 10:47pm by Kendall*

**physics**

A 28.6-g bullet is fired from a rifle. It takes 2.36 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 710 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
*Wednesday, December 5, 2012 at 10:34pm by michelle*

**physics**

A rifle allowed a bullet fired with an initial horizontal velocity to travel 76.0 m while only falling a distance of 0.40 m. What was the initial x-velocity of the bullet? Round your answer to 2 decimal places.
*Sunday, November 11, 2012 at 8:32pm by Sara*

**physics **

a 15-g bullet is fired from a rifle. it takes 2.50 * 10^-3s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 715 m/s. assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet. (answer ...
*Friday, January 31, 2014 at 3:14pm by courtney*

**Physics**

A bullet of 10g enters a target at 100 ms-1 and leaves it 0.01 s later. Calculate: i. The rate of change of momentum of the bullet ii. The resistance offered by the target iii. The loss of kinetic energy of the bullet iv. The deceleration of the bullet v. The distance ...
*Wednesday, September 19, 2012 at 8:23pm by Emily*

**Physics**

A bullet of 10g enters a target at 100 ms-1 and leaves it 0.01 s later. Calculate: i. The rate of change of momentum of the bullet ii. The resistance offered by the target iii. The loss of kinetic energy of the bullet iv. The deceleration of the bullet v. The distance ...
*Wednesday, September 19, 2012 at 11:49pm by Emily*

**physics**

A bullet of mass m = 5.89 g is fired into a block of mass M = 3.09 kg that is initially at rest on the edge of a smooth table. (The table top is 0.83 m above the floor.) The bullet ends up stuck in the block, and together they fly off the table and fall to the floor. If the ...
*Sunday, April 8, 2012 at 2:49pm by Marc*

**physics**

A gun that shoots bullets at 469m/s is to be aimed at a target 45.7 m away ans level with the gun. How high above the target must the gun barrel be pointed so that the bullet hits the target? Which equation would I use? I should have gotten 4.8 cm for the answer... Find the ...
*Wednesday, October 25, 2006 at 7:51pm by Bobby*

**Physics**

A rifle shoots a 4.1g bullet out of it's barrel. The bullet has a muzzle velocity of 975 m/s just as it leaves the barrel. Assuming a constant horizontal acceleration over a distance of 43.0 cm starting from rest, with no friction between the bullet and the barrel, what force ...
*Thursday, February 20, 2014 at 10:20pm by D*

**physics**

A bullet is fired from a rifle that is held 1.06 m above the ground in a horizontal position. The initial speed of the bullet is 1340 m/s. Find (a) the time it takes for the bullet to strike the ground and (b) the horizontal distance traveled by the bullet. I am not really ...
*Monday, January 29, 2007 at 4:21pm by James*

**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 1**

A bullet is fired from a rifle that is held 2.0 m above the ground in a horizontal position. The initial speed of the bullet is 1250 m/s. (a) Find the time it takes for the bullet to strike the ground. 1 s (b) Find the horizontal distance traveled by the bullet. 2 m
*Tuesday, September 18, 2012 at 10:56pm by Anonymous*

**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 - Dynamics in two dimensions**

A sharpshooter shoots the bullet horizontally over level ground with a velocity of 300m/s. At the instant that the bullet leaves the barrel, its empty shell casing falls vertically and strikes the ground with a vertical velocity of 5m/s. How far does the bullet travel?
*Saturday, December 4, 2010 at 3:00am by Farah*

**Physics**

A fighter, traveling at 474 m/s fires a bullet perpendicular to its flight path. The muzzle velocity of the bullet is 515 m/s. At what angle to its intended path does the bullet actually travel? Answer between âˆ’180â—¦ and +180â—¦. Answer in units of â—¦.
*Monday, September 6, 2010 at 3:34pm by laura*

**Physics**

The sound speed is 340 m/s, give or take a few. You might want to compute it or look it up for that specific temperature. Solve this equation to get the distance, X: 2.00 = bullet travel time + sound travel time = X/460 + X/340 Solve for X, in meters
*Sunday, December 12, 2010 at 11:08pm by drwls*

**physics**

suppose you fire a bullet speed 1600 m/s in a shooting gallery and hear the gong on the target ring .731s later taking the speed of sound to be 330m/s and assuming the bullet travels straight downrange at a constant speed, how far does the bullet travel before hitting the ...
*Thursday, October 1, 2009 at 4:03pm by Andre*

**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*

**physics**

a 150 grain .30-06 bullet has a mass of 0.01 kg and a muzzle velocity of 900 m/s. If it takes 1 ms(millisecond) to travel down the barrel, what is the average force acting on the bullet?
*Wednesday, December 1, 2010 at 9:28pm by jc*

**physics**

Your question is badly worded. 4 m is not the distance from which the bullet was fired. It is the distance over with the bullet's velocity is decelerated to zero. Otherwise the question cannot be answered. I will ignore your second question, which should have been posted ...
*Thursday, February 2, 2012 at 5:31am by drwls*

**physics**

A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (uniform acceleration)
*Monday, November 1, 2010 at 9:02pm by Cassie*

**physics**

A rifle bullet is fired from the top of a cliff at an angle of 30o below the horizontal. The initial velocity of the bullet is 800 m/s. If the cliff is 80 m high, how far does it travel horizontally?
*Saturday, June 26, 2010 at 1:18am by virginia*

**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**

How do you conclude the answer to the following : What will be the approximate pressure (bar/psi ) for a bullet shaped object weighing 35kg..500mm diameter x 900mm. to travel horizontally for a distance of 30 metres before landing..
*Friday, January 13, 2012 at 1:55pm by Cory*

**Physics**

How do you conclude the answer to the following : What will be the approximate pressure (bar/psi ) for a bullet shaped object weighing 35kg..500mm diameter x 900mm. to travel horizontally for a distance of 30 metres before landing..
*Friday, January 13, 2012 at 3:53pm by Cory*

**Physics 2(Plz Help! :) :) ;))**

A bullet leaving a rifle at an angle of 45 degrees travels a distance of 10 Km determine: A). The muzzle velocity B). What angle would you have to shoot the same bullet to go HALF the distance? Lower angle
*Thursday, February 24, 2011 at 9:37pm by Jessica*

**physics**

The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance 100 cm apart on the same axle. From the angular displacement 22.9 ◦ of the two bullet holes in the disks and the rotational speed 707 rev/min...
*Friday, October 14, 2011 at 12:12pm by liz*

**physics**

The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance d apart on the same axle (Fig. below). From the angular displacement of the two bullet holes in the disks and the rotational speed of the disks, we...
*Saturday, May 18, 2013 at 12:17pm by Anonymous*

**physics**

A wagon with a width of 2.4 m, moving at a speed of 15 m per second, was shot through by a bullet perpendicular to the movement of the wagon. The distance between the two bullet holes in the wagon’s walls is 6 cm. What is the speed of the bullet?
*Wednesday, August 17, 2011 at 9:14pm by Mia*

**physics**

Calculate the time it takes to travel 85 m. That is just 0.45 s. Then, calculate how much the bullet falls in that time. Use Y = (g/2)t^2 That will be the miss distance.
*Tuesday, November 23, 2010 at 7:29pm by drwls*

**physics**

A ballistics pendulum is a device used to measure the speed of a fast moving projectile such as a bullet. A bullet of mass 5g is fired into a large block of wood of mass 1.5kg suspended from some light wires. The bullet is stopped by the block and the entire system swings ...
*Sunday, August 25, 2013 at 2:51am by ZU*

**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 of mass 25kg strikes horizontally an immovable block of wood with a velocity of 250m/s and penetrates it a distance of 1m. Calculate the resistance of the wood on the bullet , assuming the resistance to be uniform. How far would the bullet have penetrated , if its had...
*Thursday, August 8, 2013 at 3:19am by Salina*

**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*

**physics**

A bullet of mass 8 g strikes a ballistic pendulum of mass 2.0 kg. The center of mass of the pendulum rises a vertical distance of 10 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.
*Thursday, December 9, 2010 at 3:22pm by joey*

**Physics**

A bullet of mass 3.2 g strikes a ballistic pendulum of mass 3.6 kg. The center of mass of the pendulum rises a vertical distance of 13 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.
*Tuesday, March 1, 2011 at 12:54pm by RD*

**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 0.54 m and d is 8.0 m. Assume ...
*Sunday, October 24, 2010 at 9:00pm by Gabbi*

**physics **

A bullet of mass 10 g has a speed of 500 m/s. a) What is its kinetic energy? b) if it penetrates a block of wood a distance of 10 cm before coming to rest, what is the average frictional force stopping the bullet? A second bullet identical to the first is shot through a sheet ...
*Monday, October 14, 2013 at 6:37pm by Hayden *

**physics for physical science**

a bullet of mass 0.015kg strikes ballistic pendulum of mass 2.0kg .the center of mass of the pendulum rises a vertical distance of 0.12m.assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.
*Friday, April 26, 2013 at 10:56am by lonia*

**Physics**

A 5.0-g bullet traveling horizontally at an unknown speed hits and embeds itself in a 0.195-kg block resting on a frictionless table. The block slides into and compresses a 180-N/m spring a distance of 0.15m before stopping the block and bullet. Determine the initial speed of ...
*Tuesday, March 11, 2014 at 11:46am by BULTURP*

**physics**

Answer in m/s. The speed of a moving bullet can be deter- mined by allowing the bullet to pass through two rotating paper disks mounted a distance 72 cm apart on the same axle. From the angular displacement 32.1 of the two bul- let holes in the disks and the rotational speed...
*Tuesday, May 3, 2011 at 7:32pm by fg*

**Physics**

1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, and the bullet penetrates .15 m into the block of wood, determine: a) The average force required to stop the bullet. b) The impulse exerted by the ...
*Saturday, July 14, 2012 at 2:12am by Help Please*

**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**

(b) Use the stopping distance of the block, X, to get its velocity after the bullet goes through, Vblock. (1/2)M*Vblock^2 = M*Uk*g*X (a) The momentum loss of the bullet equals the momentum gain of the block. Use that fact to calculate the initial bullet velocity, Vi. (c) ...
*Tuesday, May 3, 2011 at 7:25pm by drwls*

**physics**

How long does it take for the bullet to go 120 meters? How much does the bullet fall in that time? b) tanTheta=falling distance/120
*Saturday, August 1, 2009 at 9:56am by bobpursley*

**mechanics - physics**

Force * distance = Work done by bullet = Initial kinetic energy of the bullet Solve for the force F = M*V^2/(2*X) = 3*10^-3*(500)^2/(2*0.2) Newtons = 1875 N
*Saturday, January 5, 2013 at 5:47am by drwls*

**physics**

A .22 rifle bullet traveling at 360m/s strikes a block of wood, which penetrates to a depth of .110m. The mass of the bullet is 1.80g. Assume a constant retarding force.A) how much time is required for the bullet to stop? b) what force in newtons soes the wood exert on the ...
*Thursday, November 16, 2006 at 2:39pm by Chris*

**PHY131**

a bullet is fired from a gun that is 2.0 meters above flat ground. the bullet emerges from the gun with a speed of 250 m/s. a) how long does the bullet stay in the air before it hits the ground? b) At what horizonatal distance from the firing point does the bullet strike the ...
*Sunday, March 7, 2010 at 1:12pm by JEZZ*

**PHY131**

a bullet is fired from a gun that is 2.0 meters above flat ground. the bullet emerges from the gun with a speed of 250 m/s. a) how long does the bullet stay in the air before it hits the ground? b) At what horizonatal distance from the firing point does the bullet strike the ...
*Tuesday, March 16, 2010 at 10:46pm by S.Strange*

**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**

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**

a 3.0-g bullet traveling at 350-m/s hits a tree and slows down ununiformly to a stop while penetrating a distance of 12-cm into the trees trunk. what was the force exerted on the bullet to bring it to a rest?
*Saturday, January 26, 2008 at 7:45pm by melissa*

**physics**

Figure two things a) time it takes bullet to hit target: time=distanc/velocitybullet b) time for sound to travel back to the shooter time= distance/velocitysound Add those two times.
*Thursday, April 29, 2010 at 9:40pm by bobpursley*

**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 bullet of mass m=10 g is fired with initial speed vi = 400 m/s into a block of mass M=2 kg initially at rest at the edge of a frictionless table of height h=1 m as shown in the figure. The bullet remains in the block, and after the impact the block lands a distance d from ...
*Monday, January 14, 2013 at 2:16pm by tami*

**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 bullet of mass 0.04kg moving with a speed of 90m/s enter a heavy wooden block is stopped after a distance of 60cm.What is the avg resistive force exertes by the block or the bullet
*Tuesday, November 12, 2013 at 2:00am by ricong*

**physics**

a bullet of mass 0.04kg moving with a speed of 90m/s enter a heavy wooden block is stopped after a distance of 60cm.What is the avg resistive force exertes by the block or the bullet
*Tuesday, November 12, 2013 at 2:00am by ricong*

**physics**

Assuming they travel in one-dimension we can use the x(t)= vt+1/2 at^2. The slower boy will travel a distance X and the faster boy will travel a distance 100-X because X will be the meeting point. And there is no acceleration involved, so the equation will look like x=5t and ...
*Friday, September 2, 2011 at 12:48am by Wilson*

**Physics**

A 153 g bullet is fired from a rifle having a barrel 0 . 794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx 2 , where a = 12600 N, b = 8420 N / m, c = 10100 N / m 2 , with x ...
*Friday, November 15, 2013 at 3:09pm by Justin*

**Physics**

A 153 g bullet is fired from a rifle having a barrel 0.794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx^2 , where a = 12600 N, b = 8420 N/m, c = 10100 N/m^2, with x in ...
*Monday, November 18, 2013 at 11:01am by Justin*

**physics**

A(n) 3.46 g bullet is fired into a(n) 2.4 kg ballistic pendulum and becomes embedded in it. The acceleration of gravity is 9.8 m/s2 . If the pendulum rises a vertical distance of 7.13 cm, calculate the initial speed of the bullet.
*Wednesday, October 27, 2010 at 7:53pm by Jonathan*

**Physics 12 Kinematics**

a. the distance the monkey drops in time t, is the same distance the bullet drops in time t. You dont have to know t to know that. b. you have the formula there. That velocity is the velocity it takes for the bullet to reach impact directly below the monkey.
*Friday, November 8, 2013 at 8:47pm 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**

A bullet fired vertically upwards from a gun held 2m above the ground reaches its maximum height in 4sec, calculate its initial velocity and the total distance the bullet travels by the time it hits the ground
*Thursday, December 9, 2010 at 9:05am by Saul*

**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*

**Physics**

A 2.50g bullet, traveling at a speed of 425m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 270g (a) find the speed of the bullet/block combination immediately after the collision (b) how high does the combination rise above its initial position...
*Friday, March 2, 2007 at 2:53am by CJ*

**Physic**

a bullet is fired from at a shooting range. The bullet hits the ground after .32 seconds. How far did it travel horizontally and vertically in this time if it was fired at a velocity of 1100 m/s?
*Tuesday, February 11, 2014 at 12:44pm by Marie*

**physics**

A 20 g bullet moving horizontally with a speed v hits a 2-kg block of wood resting on a table. After hitting the block the bullet is embedded in the block of wood and the block and the bullet moves a distance of 40 cm before it stops. If the coefficient of friction between the...
*Monday, July 23, 2012 at 12:55pm by Edward*

**physics. need help fast**

LOL had the same question as you, this is the help I got: 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 ...
*Thursday, January 27, 2011 at 7:50pm by Anonymous*

**Physics**

A(n) 5.52 g bullet is fired into a(n) 3.07 kg ballistic pendulum and becomes embedded in it.The acceleration of gravity is 9.8 m/s^2. If the pendulum rises a vertical distance of 4.48 cm, calculate the initial speed of the bullet. Answer in units of m/s
*Sunday, January 29, 2012 at 9:18pm by amanda and leah*

**physics**

Assuming a finite speed of the bullet, yet fast enough that the disc cannot make a full revolution while the bullet flies the 100cm, then things are ok. 707rev/min = 707*360°/min = 707*360°/60s = 4242°/s Since it only rotated 22.9°, we can assume the bullet took 22.9/4242 = 0....
*Friday, October 14, 2011 at 12:12pm by Steve*

**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 projectile is fired horizontally outward from the top of a table. the initial height of the bullet above the ground is 1.5 meters and the bullet travels a horizontal distance of 3.0 meters before striking the ground.
*Monday, February 4, 2013 at 1:10pm by Anonymous*

**Physics**

A 75.0g bullet is fired at a muzzle velocity of 476 m/s from a gun with a mass of 4.75kg and a barrel length of 60.0cm. a. How long is the bullet in the barrel? b. What is the force of the bullet while it is in the barrel? c. Find the impulse given to the bullet while it is in...
*Wednesday, March 7, 2012 at 3:57pm by Jack Binns*

**Physics**

A 0.0200 kg bullet moving horizontally at 500 m/s embeds itself into an initially stationary 0.500 kg block. (a) What is their velocity just after the collision? (b) The bullet-embedded block slides 8.0 m on a horizontal surface with a 0.30 kinetic coefficient of friction. Now...
*Sunday, July 14, 2013 at 9:51pm by Amy*

**physics**

for this question A bullet is fired from a rifle that is held 1.8 m above the ground in a horizontal position. The initial speed of the bullet is 1120 m/s. Find why is the equation just (.5)(9.8)(t^2)=1.8 why dont we have to take in account for initial velocity: (.5)(a)(T^2)+(...
*Monday, December 7, 2009 at 5:12pm by Jordan*

**Physis**

A bullet of mass of 30g and travelling at a speed of 200msˉ¹ embeds itself in a wooden block. The bullet penetrates a distance of 12cm into the wood. Using the concepts of work done by a force and kinetic energy, determine the average resistive force acting on the bullet.
*Thursday, March 8, 2012 at 4:55pm by James*

**Physics**

A 0,1kg bullet is fired horizontally towards blcok A and B, which are hanging from cords. The bullet passes through block A of mass 2kg and becomes embedded in block B of mass 6.4kg. The bullet thus causes A and B to start moving with velocities of 6m,s- and 2m.s- respectively...
*Tuesday, February 12, 2013 at 3:02pm by Kerry*

**AP Physics**

you travel down the highways, starting from rest. You travel for 2 hours at a speed of 105 km/h. then you stop and eat your lunch for 30 minutes. Then you travel for 1.5 hours at 75km/hr. Make a distance vs time graph of this motion.
*Wednesday, September 7, 2011 at 11:26pm by Anonymous*

**physics**

A 25-g lead bullet is shot with a speed of 240 m/s into a wooden wall. Assuming that 70% of the kinetic energy is absorbed by the bullet as heat (and 30% by the wall), what is the final temperature of the bullet? (Assume the bullet is initially at room temperature of 20°C.
*Thursday, July 26, 2012 at 8:20pm by lanre*

**Physics**

A .22 rifle bullet, traveling at 373m/s, strikes a block of soft wood, which it penetrates to a depth of 0.125m. The block of wood is clamped in place and doesn't move. The mass of the bullet is 1.90. Assume a constant retarding force.How much time is required for the bullet ...
*Monday, February 8, 2010 at 8:10pm by Anonymous*

**PHYSICS HELP MEEE SO CONFUSED**

1) From the height H that the block+bullet rises, assuming conservation of energy for the process, calculate the initial velocity V' of the block after the bullet is embedded. (m+M) V'^2/2 = (m+M) g H V' = sqrt(2 g H) = 2.62 m/s 2) Momentum (but not mechanical energy) is ...
*Monday, December 5, 2011 at 5:02pm by drwls*

**physics**

a 100-g bullet is fired horizontally into a 14.9kg block of wood resting on a horizontal surface and the bullet becomes embedded in the block. if the muzzle velocity of the bullet is 250 m/s , what is the speed of the bullet immedatly after the impact (neglect surface friction)
*Monday, February 4, 2008 at 1:18pm by melissa*

**PHYSICS HELP !**

when telling someone how to get to your house from campus, you need to a) give your direction of travel b) give your distance they need to travel c)give both directions and distance d) not enough information
*Thursday, April 12, 2012 at 7:19pm by AMBER *

**physics HELP ! **

when telling someone how to get to your house from campus, you need to a) give your direction of travel b) give your distance they need to travel c)give both directions and distance d) not enough information
*Thursday, April 12, 2012 at 8:32pm by AMBER ! *

**Physics HELP!**

A 20.0 g bullet is fired horizontally into a 85 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 156 N/m. The bullet becomes embedded in the block. The bullet block system compresses the spring by a ...
*Tuesday, October 16, 2012 at 12:05pm by Megan*

**Physics**

In relative distance, you travel 2.7x2 meters. Your relative velocity is 9km/hr (change to m/s). time to pass: relative distance/relative speed Now, with that time; how far did you travel.. distance=your speed*time.
*Sunday, July 8, 2012 at 6:34pm by bobpursley*

**PHYSICS !!**

A 45.0g bullet is fired on a 2.0kg wooden block which is resting on a horizontal surface with a coefficient friction of 0.4 . If the speed of the bullet is 165m/s when it hits the block. Determine the maximum horizontal distance of the block will reach
*Wednesday, February 26, 2014 at 8:09am by gie*

**Calculus Help **

A high-speed bullet train accelerates and decelerates at the rate of 4 ft/s2. Its maximum cruising speed is 90 mi/h. (Round your answers to three decimal places.) (a) What is the maximum distance the train can travel if it accelerates from rest until it reaches its cruising ...
*Saturday, April 19, 2014 at 3:55pm by Ali*

**physics**

The momentum of the bullet equals the momentum of the block/bullet after impact. the energy of the block/bullet converts to potential energy in rising to the height. So work backwards, and solve for velocity of the bullet.
*Tuesday, March 4, 2008 at 11:59am by bobpursley*

**Physics- Elena please help!**

A 20.0 g bullet is fired horizontally into a 85 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 156 N/m. The bullet becomes embedded in the block. The bullet block system compresses the spring by a ...
*Tuesday, October 16, 2012 at 4:16pm by Megan*

**Physics Honors**

A bullet is fired from a rifle, emerging at 340 m/s. It strikes a sandbag some distance away, having lost 10% of its velocity due to air resistance. if it penetrates the sandbag to a depth of 12 meters, how long did it take for the bullet to come to rest in the bag?
*Sunday, October 23, 2011 at 9:00pm by Allison*

**Physics Honors**

A bullet is fired from a rifle, emerging at 340 m/s. It strikes a sandbag some distance away, having lost 10% of its velocity due to air resistance. if it penetrates the sandbag to a depth of 12 meters, how long did it take for the bullet to come to rest in the bag?
*Sunday, October 23, 2011 at 9:02pm by Allison*

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