A 270 caliber hunting rifle fires an 8.5 gg bullet, which exits the gun barrel at a speed of 940 m/sm/s .   What impulse does the burning gunpowder impart to the bullet? If it takes 2 msms for the bullet to travel the length of the barrel, what is the average force on the bullet? Express your answer in pounds.

A 6.2 g bullet is fired into a 179 g block that is initially at rest at the edge of a frictionless, 0.6 m high table. The bullet remains in the block, and after impact, the block lands 2.9 m from the edge of the table. What was the speed of the bullet before impact?

In the figure, mass m1=10.0 kg is moving at a speed of Vi1 undergoes a collision with mass m2 = 7.00 kg with speed Vi2 at θi = 37°. After the collision, the two masses stick together and keep moving with Vf at θf = 17°. The change in kinetic energy ∆K = −58.5 J, What is the velocity before the collision of Vi1 and Vi2 and after the collision of Vf?

There is a collision between a box and a ball in the xy plane. The collision is inelastic, but not perfectly inelastic. The box has a mass of 45kg and an initial velocity of 15m/s in the x direction. The ball has a mass of 55kg and an initial velocity of 25 in the y direction. The final velocity of the box was 13 in the y direction. What was the final speed of the ball in m/s?

44. The mass of the blue puck in Figure P9.44 is 20.0% greater than the mass of the green puck. Before colliding, the pucks approach each other with momenta of equal magni- tudes and opposite directions, and the green puck has an initial speed of 10.0 m/s. Find the speeds the pucks have after the collision if half the kinetic energy of the system becomes internal energy during the collision. 30.0° 30.0° Figure P9.44

A pistol fires a 2.57 g bullet.  The bullet then strikes a 3.07 kg wooden block resting on a horizontal frictionless surface.  The block and the embedded bullet then slide across the surface as one object at a velocity of 1.22.  Find the speed of bullet before the bullet is embedded in the block.

Consider the two pucks shown in the figure. As they move towards each other, the momentum of each puck is equal in magnitude and opposite in direction. Given that v; = 12.0 m/s, and mblue is 25.0% green greater than mareen, what are the final speeds of each puck (in m/s), if the kinetic energy of the system is converted to internal energy? 30.0° 30.0 m/s V green V blue m/s I|||

Two ice skaters with masses of 22.8 kg and 11.1 kg slide toward each other on a frictionless surface with speeds of 3.6 m/s and 2.8 m/s respectively. The two ice skaters lock hands after colliding head-on. Find the final speed of the two ice skaters.

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Two objects of mass 8 g and 5 g, respectively, move parallel to the x-axis, as shown. The 8 g object overtakes and collides with the 5 g object. Immediately after the collision, the y-component of the velocity of the 8 g object is 9 m/s upward. What is the y-component of the velocity ~v of the 5 g object immediately after the collision? 1. ~vy = 14.4 m/s upward2. ~vy = 5.625 m/s downward3. ~vy = 9 m/s upward4. ~vy = 9 m/s downward5. ~vy = 5.625 m/s upward6. ~vy = 14.4 m/s downward