Problem 1: A 15 kg cannonball is fired horizontally to the right out of a 1500 kg cannon. The cannonball leaves the muzzle at 500. a) Draw a picture of the situation b) Write out the conservation of momentum equation. c) Find the recoil velocity of the cannon. (Answer: –5“)

A ball of mass 0.160 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.870 m. What impulse was given to the ball by the floor? magnitude direction

2. A 220 kg cannon fires an 14 kg ball at 360 m/s. What is the recoil velocity of the cannon? Before After

1. A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20 g bullets at 965 m/s. The mass of the hunter (including his gun) is 72.5 kg, and the hunter holds tight to the gun after firing it. Find the recoil velocity of the hunter if he fires the rifle: a. horizontally and b. at 56.0°above the horizontal.

2. An bullet of mass m = 6.40g is fired into a block of mass M = 235g that is initially at rest at the edge of a chair of height h = 0.197 m. The bullet remains in the block, and after the impact the block lands d: 0.170m from the bottom of the chair. Determine the initial velocity of %3D %3D the bullet. m 1.

1. In a perfectly inelastic collision, two objects collide and stick together. Is momentum conserved in the collision? Is energy conserved? Why or why not? A simple example might help.

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An 8 kilogram cannonball is loaded into a 1000 kilogram stationary cannon. When fired horizontally the velocity of the cannonball is 300 meters per second east. Determine the cannon’s recoil velocity.

A 3.00-g bullet is fired horizontally into a 10.0-kg block of wood suspended by a rope from the ceiling.  The bullet becomes embedded in the wood, and, as the result, the block swings up in an arc, like a ballistic pendulum, rising 3.00 mm above its original position.  Which of the following is the closest to the initial speed of the bullet? Group of answer choices a. 235 m/s b. 24.3 m/s c. 75.0 m/s d. 811 m/s e. Cannot be determined since the heat generated in the collision is       unknown

A 4.00 g bullet has a muzzle velocity of 230 m/s when fired by a rifle with a weight of 40.0 N. (a) Determine the recoil speed (in m/s) of the rifle. Choose a sign convention and see if you can write a statement of conservation of momentum that will allow you to determine the desired quantity. Don't forget that you have been given the weight rather than the mass of the rifle. m/s (b) If a marksman with a weight of 775 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. Your approach to part (a) will also work for part (b). The only difference is that the mass of the marksman must now be included. m/s