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15. Block A with a mass of 2.0 kg is moving to the right at 5.0 m/s. It collides with a block B with a mass of 3.0 kg moving at 1.0 m/s to the left. What is the coefficient of restitution if block A stops moving after collision with block B?
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- A 7400 kg truck traveling along a straight road at 14 m/s comes to a stop and remains stationary for several minutes. It then accelerates backward in reverse until it reaches 5.0 m/s in the opposite direction. What is the magnitude of the change in momentum of the truck for this entire process? A. 100,000 kg. m/s B. 140,000 kg. m/s C. 67,000 kgm/s D. 37,000 kgm/s O C O B OD O AA non-BYU Idaho student is having a snow ball fight. 'Accidentally' a snowball travelling north at 10.0 m/s hits a bicyclist traveling west at 5.00 m/s. The mass of the snowball is 0.750 kg, and the bicyclist is 55.0 kg. What is her final velocity, a. If the snow ball sticks to the bicyclist? b. If the snow ball bounces off with a speed of 2.0 m/s at an angle 20.0° West of South?The figure shows a distribution of several objects, in which m1 = 3.0 kg, m2 = 2.0 kg, and m3 = 1.0 kg a. What is the x-coordinate of thesystem’s center of mass?A. 1.67 mB. 1.83 mC. 2.5 mD. 2.75 mE. None of these b. What is the y-coordinate of thesystem’s center of mass?A. 1.5 mB. 1.83 mC. 2.17 mD. 2.75 mE. None of these
- B2A boy jumps straight up with an initial speed of 5.00 m/s. The boy’s mass is 60.0 kg, and the mass of the earth is about 6.00 x 1024kg. a. What is the initial recoil speed of the earth? b. How much time does it take for the two to reach their maximum separation? i.e., how long until the boy starts down? c. How far did the boy move in this time? d. How far did the earth move in this time?◄ Discord 06:29 an. 9.9. = inst-fs-iad-prod.inscloudgate.net Problem 4 Two cars collides at a junction as shown in the figure. The first car has mass m₁ 1500 kg and moves with speed v₁ = 30 m/s due east. The second car has mass m₂ = 1000 kg and moves with speed V2 15 m/s due north. After the collision, the cars stick together with velocity v. = = m₁ ●●● Car 1 E = m₂ Car 2 (a) Find the velocity right after the collision. Answer in compo- nent form (2, 3). 0 (b) What is the energy loss in this collision? (c) If the coefficient of kinetic friction between the wreckage and 0.3, how far would it slides before coming to a the road is k stop? 6 of 14 Ans: Ans: 78%
- Ronald went off to play a game of billiards. He hit the 0.42kg white ball which began to move at 7.7m/s. Afterward, it stuck a stationary 9 ball of the same mass. a. Compute for the momentum before the collision of the white ball. b. compute for the momentum before the collision of the 9 ball. c. what are the velocities of the two balls after the collision.B3A miniature spring-loaded, radio-controlled gun is mounted on an air puck. The gun’s bullet has a mass of 5.00 g, and the gun and puck have a combined mass of 120 g. With the system initially at rest, the radio controlled trigger releases the bullet causing the puck and empty gun to move with a speed of 0.500 m/s. What is the bullet’s speed? a. 4.80 m/s. b. 11.5 m/s c. 48.0 m/s d. 12.0 m/s
- question A boy, of mass 45 kg, is sliding on ice at a constant 3m/s. When he collides with another boy of mass 50 kg who is traveling at 2 m/s, they become entangled and move off together. Calculate the speed with which they move off after the collision. Select one: a. 2.47 m/s b. 24.7 m/s c. 0.25 m/s d. 247 m/s Finish attempt.A 3.0 kg hockey puck on a frictionless surface moves at 8.0 m/s toward a stationary 4.0 kg hockey puck. The 3.0 kg puck collides head on with the 4.0 kg puck. After the collision the 3.0 kg puck is at rest. What is the speed of the 4.0 kg puck after the collision? a. 0 m/s b. 3.4 m/s c. 6.0 m/s d. 6.93 m/s e. 12.0 m/s