In a game of pool, the cue ball moves at a speed of 2 m/s toward the eight ball. When the cue ball hits the eight ball, the cue ball bounces off with a speed of 0.8 m/s at an angle of 20°, as shown in the diagram below. Both balls have a mass of 0.6 kg. a. What is the momentum of the system before the collision? (Write it in component form.) (1 point)

b. What is the momentum of the system after the collision? (1 point)

c. Write the velocity of the cue ball after the collision in component form. (1 point)

d. What is the x-component of the velocity of the eight ball after the collision? (2 points)

e. What is the y-component of the velocity of the eight ball after the collision? (2 points)

f. At what angle does the eight ball travel after the collision? (2 points)

g. What is the magnitude of the eight ball's velocity after the collision? (1 point)

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant