8. A hockey puck of mass 0.45 kg is shot east at 2.30 m/s strikes a second puck, initially at rest, of mass 0.60 kg. As a result of the collision, the first puck is deflected at an angle of 34° south of east, with a speed of 1.30 m/s. What is the speed of the second puck after the collision? m/s ssf60 f60 ss 60 sstc 0 ssf60

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?

4. A 0.240 kg tennis ball is hit forward with a speed of 26.0 m/s. It is returned in the opposite direction at 37.5 m/s. What is the magnitude of the ball's change in momentum in this scenario?

8. Two identical pucks of mass 40 grams on an air hockey table collide (no friction). Puck A is traveling at 15 m/s when it collides with Puck B, which is initially at rest. After the collision, both pucks travel in the same direction, with puck A moving at 6 m/s and puck B moving independently of A (no sticking). a. Find the initial momentum of both puck A and puck B before the collision. b. Calculate the final velocity of puck B after the collision. c. Calculate the final momentum of each puck after the collision. d. Calculate the total final momentum between the two pucks. How does it compare to the total momentum before the collision? 9. Rosita needs to purchase a sump pump for her basement that must carry 10.0 kg of water to a height of 3.0 m every minute. a. How much work is done by the pump in moving 10.0 kg of water? b. How much power must the pump use to complete its task? 10. A 700 kg roller coaster car travels along the tracks shown below. At point A, the car is 60 m above…

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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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

1.Two cars collide at an intersection and stick together. Car A, with a mass of 1200 kg , was going east at vA = 25 m/s before the collision while car B, of mass 1600 kg , was going north at vB = 16 m/s . What is the speed of the cars after the collision?   2.A head-on, elastic collision between two particles with equal initial speed v leaves the more massive particle (mass m1 ) at rest. The less massive particle has mass m2 . Find the ratio of the particle masses. Then find the final speed of the less massive particle.

8. A hockey puck (1) of mass 140 g is shot east at a speed of 7.00 m/s. It strikes a second puck (2), initially at rest, of mass 133 g. As a result of the collision, the first puck (1) is deflected at an angle of 60° south of east and the second puck (2) moves at an angle of 48° north of east. What is the magnitude of the velocity of puck (1) after the collision? m/s

3. A 95.5-kg football player running north at 6.25 m/s is tackled by a 105-kg player running south at 4.90 m/s. If they stick together during the collision, what is the magnitude and direction of their velocity right after the collision?