A block of mass m1 = 2kg moves at a velocity of v1,i = 2m/s. It collides with another block of mass m2 = 1kg that is initially moving at a velocity of v2,i = 1m/s. After the collision, the first block is at rest. Positive is in the +x direction. 1. What is the velocity of the second block after the collision? 2. Is the collision elastic or inelastic? Explain.

43.A 5.50-kg bowling ball moving at 9.00 m/s collides with a 0.850-kg bowling pin, which is scattered at an angle of 15.8° to the initial direction of the bowling ball and with a speed of 15.0 m/s. a. Calculate the final velocity (magnitude and direction) of the bowling ball. b. Is the collision elastic? Solution

A baseball player pitches a fastball toward home plate at a speed of 41.0 m/s. The batter swings, connects with the ball of mass 285 g, and hits it so that the ball leaves the bat with a speed of 37.0 m/s. Assume that the ball is moving horizontally just before and just after the collision with the bat.   a.)What is the impulse delivered to the ball by the bat? Enter a positive value if the impulse is in the direction the bat pushes the ball and  enter a negative value if the impulse is in the opposite direction the bat pushes the ball.   b.)If the bat and ball are in contact for 3.00 ms, what is the magnitude of the average force exerted on the ball by the bat?

*9. A disk of mass m moving in the positive x direction collides with a stationary disk, also of mass m. The first disk moves in a direction with respect to the x axis, and the second disk moves off in a direction of 2 below the x axis, as shown in the figure. After the collision Before the collision v m/s a) What is the momentum of the system before collision? b) Write down the momentum of the two disks after collision with respect to x. c) Write down the momentum of the two disks after collision with respect to y. d) If v= 10 m/s, 0₁-30°, and vi=8 m/s, what is v2/? e) What is the kinetic energy of the system before and after collision in term of m? f) What type of collision is it?