A rifle with a weight of 30 N fires a 5.0-g bullet with a speed of 300 m/s. (a) Find the recoil speed of the rifle. (b) If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.

A 1.72 kg block of soft wood is suspended by two strings from the ceiling. The wood is free to rotatein pendulum-like fashion when a force is exerted upon it. An 8.5 g bullet is fired into the wood. Thebullet enters the wood at 431 m/s and exits the opposite side shortly thereafter. If the wood rises to aheight of 13.8 cm after the collision, then what is the exit speed of the bullet?

A rifle with a weight of 40 N fires a 4.5 g bullet with a speed of 290 m/s. (a) Find the recoil speed of the rifle. m/s(b) If a 725 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s

A railroad car of mass 2.85 x 104 kg moving at 3.10 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision?

In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0235 kg and the mass of the pendulum is 0.250 kg, how high h will the pendulum swing if the marble has an initial speed of 5.65 m/s? Assume that the mass of the pendulum is concentrated at its end so that linear momentum is conserved during this collision. h = m

A rifle with a weight of 25 N fires a 4.9-g bullet with a speed of 270 m/s. (a) Find the recoil speed of the rifle. m/s (b) If a 600-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s

In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0315 kg and the mass of the pendulum is 0.250 kg, how high ℎ will the pendulum swing if the marble has an initial speed of 5.65 m/s? Assume that the mass of the pendulum is concentrated at its end so that linear momentum is conserved during this collision.

A  12.70 g bullet has a muzzle velocity  (at the moment it leaves the end of a firearm)  of  430 m/s when fired by a rifle with a weight of 25.0 N. Calculate the recoil speed (in m/s) of the rifle.

A rifle with a weight of 35 N fires a 5.5-g bullet with a speed of 270 m/s. (a) Find the recoil speed of the rifle. 0.386 x m/s (b) If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s

An outlaw cuts loose a wagon with two boxes of gold, of total mass 300 kg, when the wagon is at rest 50 m up a 6.0° slope. The outlaw plans to have the wagon roll down the slope and across the level ground, and then fall into a canyon where his accomplices wait. But in a tree 40 m from the canyon’s cliff wait the Lone Ranger (mass 75.0 kg) and Tonto (mass 60.0 kg). They drop vertically into the wagon as it passes beneath them (Fig.). (a) If they require 5.0 s to grab the gold and jump out, will they make it before the wagon goes over the cliff? The wagon rolls with negligible friction. (b) When the two heroes drop into the wagon, is the kinetic energy of the system of heroes plus wagon conserved? If not, does it increase or decrease, and by how much?