# Impulse and Momentum

A bullet of mass m is fired at speed v0 into a wooden block of mass M. The bullet instantaneously comes to rest in the block. The block with the embedded bullet slides along a horizontal surface with a coefficient of kinetic friction . What is the algebraic expression which determines how far the block slides before it comes to rest (the magnitude of displacement s in the figure)?

1. 👍 0
2. 👎 0
3. 👁 1,412
1. momentumbefore=momentumafter
mVo=(m+M)V
solve for V of the combo.

Initial KE=friction work
1/2 (m+M)V^2=mu(g)(m+M)*d
solve for d.

d= 1/2 (m/(m+M))^2Vo^2/mu*g

check that.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

The speed of a rifle bullet may be measured by means of a ballistic pendulum. The bullet, of known mass m and unknown speed V, embeds itself in a stationary wooden block of mass M, suspended as a pendulum of length L. This sets

asked by Anonymous on May 31, 2019
2. ### physics

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

asked by Bella on February 21, 2009
3. ### Physics

A block of wood of mass 1.2kg initially at rest is free to slide on a horizontal surface. A bullet of mass 100g travelling at a speed of 780ms^-1 is fired horizontally at the block and becomes embedded in it. Calculate the speed

asked by Sam on October 8, 2014
4. ### Physics

A small wooden block with mass 0.800kg is suspended from the lower end of a light cord that is 1.52m long. The block is initially at rest. A bullet with mass 0.0126kg is fired at the block with a horizontal velocity v0. The bullet

asked by Katie on March 12, 2015
5. ### Physics

A 3.5 g bullet is fired horizontally at 2 blocks resting on a smooth tabletop. The bullet passes trough the 1st block, with mass 1.2 kg and embed itself in the second with mass 1.8 kg. Speeds of 0.63 m/s and 1.4 m/s, respectively

asked by Jo Wan on October 26, 2018
1. ### AP PHYSICS MECH.

A 5.00 g bullet moving at 648 m/s strikes a 670 g wooden block at rest on a frictionless surface. The bullet emerges, traveling in the same direction with its speed reduced to 440 m/s. A 5.00 g bullet moving at 648 m/s strikes a

asked by vm on February 12, 2011
2. ### Physics

The diagram shows a ballistic pendulum,used to measure the speed of the bullets.The 3,235kg wooden block hangs from a 3m cord.When a bullet is fired into it from close range ,it swings through an angle of 18 before coming to rest

asked by Anonymous on June 3, 2019
3. ### physics

As shown in the diagram, a bullet of mass 7.0 g strikes a block of wood of mass 2.1 kg. The block of wood is suspended by a string of length 2.0 m, forming a pendulum. The bullet lodges in the wood, and together they swing upward

asked by jose on January 4, 2016
4. ### physics

a bullet of mass 120g is fired horizontally into a fixed wooden block with a speed of 20 m/s. If the bullet is brought to rest in the block in 0.1s by a constant resistance, calculate the 1) magnitude of the 2) Distance moved by

asked by POPPY on April 7, 2019
5. ### physics

A 16.0-g bullet is shot into a wooden block at rest with mass 4550 g on a frictionless surface. The bullet strikes and is lodged in the block, causing is to slide at a speed of 1.20 m/s. Find the speed of the bullet (in m/s)

asked by Matt on July 23, 2016