3. Two balls, masses 6.0 kg and 3.4 kg, moving in opposite directions at 4.1 m/s and 3.5 m/s respectively, collide. After the collision the heavier ball is moving in the same direction as before at 0.4 m/s. With what velocity is the second ball moving?

1. A bowling ball of mass 8.0 kg is traveling at 10 m/s when it strikes a 1.5-kg bowling pin. After being hit by the ball, the pin flies backward (in the direction that the ball was traveling) at 20 m/s while the bail continues in the same direction. What is the velocity of the ball after impact?

21. A 2.5 kg ball moving at 4.2 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision. What is the velocity of the ball after the collision? Group of answer choices 2.1 m/s 4.2 m/s No answer 8.4 m/s 2.5 m/s

2. Two cars collide at an intersection. Car A, with a mass of 2000 kg, is going from west to east, while car B, of mass 1500 kg, is going from north to south at 15 m/s. As a result of this collision, the two cars become enmeshed and move as one afterward. In your role as an expert witness, you inspect the scene and determine that, after the collision, the enmeshed cars moved at an angle of 65° south of east from the point of impact. a. How fast were the enmeshed cars moving just after the collision? b. How fast was car A going just before the collision?

The velocity of the center of mass never changes a collision. The final velocity is equal to the initial velocity. 1. A 55 kg skater at rest on a frictionless rink throws a 3 kg ball, giving the ball a velocity of 8 m/s. What is the velocity of the center of mass? 2. A 55 kg skater is skating at 3 m/s to the right with a 3 kg ball in their hands. The skater throws a 3 kg ball, giving the ball a velocity of 8 m/s. What is the velocity of the center of mass?

1. A firecracker travels straight up at 75.0m/s and explodes into two pieces. The smaller piece carries one third of the firecracker's mass and shoots off horizontally at 48.0m/s west. Determine the speed and direction of the other piece directly after the explosion. 2. Three blocks slide on a smooth surface. Initially, the first block (m1=1.0kg) moves at 3.0m/s to the right, the second block (m2=2.0kg) is at rest, and the third block (m3=3.0kg) moves to the left at 0.50m/s. First, m1 collides elastically with m2 and recoils to the left. Afterwards, m2 and m3 collide and stick. Calculate, a. the velocities of m1 and m2 after the first collision. b. the velocity of m2 and m3 after the second collision.

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4. A block of mass 1.90 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 3.59 m/s. It eventually collides with a second, stationary block, of mass 4.53 kg, head-on, and rebounds back to the south. The collision is 100% elastic. What will be the speeds of the 1.90-kg and 4.53-kg blocks, respectively, after this collision?     1.47 m/s and 2.12 m/s     2.12 m/s and 1.47 m/s     2.68 m/s and 1.80 m/s     1.03 m/s and 1.64 m/s

A 2.00- kg mass object traveling east at 20.0 m/s collides with a 3.00- kg mass object traveling west at 10.0 m/s. After the collision, the 2.00- kg mass has a velocity 5.00 m/s to the west. How much kinetic energy was lost during the collision? 458 J 175 J 0.00 J 516 J O 91.7 J

INITIAL: FINAL: M. A white billiard ball with mass mw = 1.53 kg is moving directly to the right with a speed of v = 3.25 m/s and collides elastically with a black billiard ball with the same mass mb = 1.53 kg that is initially at rest. The two collide elastically and the white ball ends up moving at an angle above the horizontal of ew = 51° and the black ball ends up moving at an angle below the horizontal of Ob = 39°. %3D 1) What is the final speed of the white ball? m/s Submit 2) What is the final speed of the black ball? m/s Submit