Two cars have a ‘rear end’ collision. A 1200 kg Honda moving at 20m/s strikes at 1000kg Ford moving around 15m/s. Their bumpers become locked and they continue to move as one mass. What is their final velocity?

1. A billiard ball, labeled 1, moving horizontally strikes another billiard ball, labled 2, at rest. Before the impact ball 1 was moving at a speed of 5.0000 m/s and after the impact it is moving at a speed of 3.0000 m/s at an angle of 50 degrees from the original direction. The two balls have equal mass. Vii O Ball 1 only O Ball 2 only m₁ y m₂ 0₂ Vif m₁ m/s m₂ V2f (a) What should you consider a system for the collisional forces to be internal in order to apply the law of conservation of momentum ? X O Ball 1 and Ball 2 (b) Write conservation of momentum equations for the x and y directions separately and solve for the speed of ball 2 after the impact. Speed of ball 2 after impact =

Two balls moving in opposite directions have velocities v1ix = 13_m/s and v2i,x = -8_m/s. If their masses are m = 2.5 kg and m2 = 10.kg, respectively, and if their collision is perfectly elastic, then predict the velocity of each ball following the collision. Vifx: -14.13_m/s -24.12 m/s -15.41 m/s -41.08_m/s -21.97_m/s -20.6 m/s А. D. В. E. С. F. /--/ Vzfx: 0.36 m/s В. 0.2145_m/s 0.2295_m/s 0.5734_m/s 0.4 m/s 0.2872_m/s А. D. Е. С. F.

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