pysics
posted by raz .
what is the velocity of a 1,000 kg cannon that shoots 10 kg bullets at a speed of 380 m/s?

well, lets assume it is standing still and then shoots one round.
The total momentum remains zero so
0 = 1000 v + 10 * 380
v = 3800/1000
v =  3.8 m/s
The negative sign means the cannon moves backwards if the bullet moves forwards (what else is new?)
Respond to this Question
Similar Questions

physics
A 1175kg cannon shoots a 33kg shell at an angle of 25° above the horizontal and a speed of 495 m/s. What is the recoil velocity of the cannon? 
PHY  C of M
A 1100kg cannon shoots a 31kg shell at an angle of 25¡ above the horizontal and a speed of 520 m/s. What is the recoil velocity of the cannon? 
Physics
It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 110 bullets/min, the speed of each bullet being 550 m/s. … 
AP Physics
Momentum One of those Civil War cannons is fired. The Cannon has a mass of 873kg It fires a 35.0kg cannon ball at a velocity of 145 m/s at an elevation angle of 35.0 degrees. The length of the barrel is 2.10m. (a) What is the recoil … 
Physics
A cannon is mounted on a truck that moves forward at a speed of 5 m/s. The operator wants to launch a ball from a cannon so the ball goes as far as possible before hitting the level surface. The muzzle velocity of the cannon is 50 … 
Physics
It is well known that bullets fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with bullets of mass m = 2.6 g at a rate of R = 140 bullets/min. The speed of each bullet is v = 510 m/s. … 
Physics
A 350 kg cannon shoots a 10 kg cannon ball at a speed of 420 m/s. Find the recoil velocity of the cannon. 
physics
A cannon is mounted on a railroad car. The cannon shoots a 1.75 kg ball with a muzzle velocity if 300 m/s. The cannon and the railroad car together have a mass of 4500 kg. if the ball, cannon, and railroad car are initially at rest, … 
Physics
We commonly see Superman being shot and bullets bounce off of him. Suppose Mr. Bad shoots Superman with 4.00 kg bullets at a rate of 100 bullets/min for 9.00 s. If the speed of each bullet is 480.00 m/s and rebounds straight back with … 
science
A cannon on wheels (mass = 300 kg) shoots Bo Bo the clown (mass = 60 kg) over the big top. If Bo Bo's speed out of the cannon is 22 m/s, with what speed will the cannon recoil?