Physics

A bullet with a mass of 28 g is fired from a 2.8-kg gun that is stationary, but free to recoil. After the bullet is fired, the gun is observed to be moving at 1.4 m/s [left]. What is the velocity of the
bullet?

1. 👍 0
2. 👎 0
3. 👁 845
1. let left be negative.

initial (before shooting, momentum was zero, so after shooting, the sum of the bullet and gun momentum has to be zero
28*V +2800*(-1.4)=0
solve for V

1. 👍 0
2. 👎 0
👨‍🏫
bobpursley

Similar Questions

1. 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

2. 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

3. science

A bullet of mass 50g is fired from a gun of mass 6kg with a velocity of 400m/s. calculate the recoil velocity of the gun?

4. Physics-Intro

A bullet with mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with mass 4.50 kg. What is the speed of the recoil of the gun?

1. Physics

A gun is accurately aimed at a dangerous criminal hanging from the gutter of a building. The target is well within the gun’s range, but the instant the gun is fired and the bullet moves with a speed v(sub0) , the criminal lets

2. science

A bullet of mass 50g is fired from a gun of mass 6kg with a velocity of 400m/s. calculate the recoil velocity of the gun?

3. physics

A rifle with a mass of 0.9 fires a bullet with a mass of 6.0 g (0.006 kg). The bullet moves with a muzzle velocity of 750 m/s after the rifle is fired. A. What is the momentum of the bullet after the rifle is fired? B. If external

4. physics

A miniature spring-loaded, radio-controlled gun is mounted on an air puck. The gun's bullet has a mass of 5.00 g, and the gun and puck have a combined mass of 120 g. With the system initially at rest, the radio controlled trigger

1. Physics

A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, the acceleration of the bullets just before they

2. physics

A bullet with a mass of 5.00* 10^ -3 kg is loaded into a gun. The loaded gun has a mass of .52 kg. The bullet is fired, causing the empty gun to recoil at a speed of 2.1 m/s. What is the speed of the bullet? ok i worked it out and

3. math

A bullet is found embedded in the wall of a room 2.3 m above the floor. The bullet entered the wall going upward at an angle of 39.8°. How far from the wall was the bullet fired if the gun was held 1.2 m above the floor?

4. physics

A gun is fired vertically into a 1.55 kg block of wood at rest directly above it. If the bullet has a mass of 21.0 g and a speed of 190 m/s, how high will the block rise into the air after the bullet becomes embedded in it? i