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In this problem we will consider the collision of two cars initially moving at right angles. We assume that after the collision the cars stick together and travel off as a single unit.
Why might two cars stick together after a collision? Answer: If two cars stick together after a collision, it’s an example of a perfectly inelastic collision. The cars remain together due to mechanical interlocking, deformation, or other forces that overcome their ability to rebound from each other.
In a perfectly inelastic collision, objects stick together after collision → treat the two objects as a single object after collision: p final = (m 1+m 2) v final • Most collisions are inelastic. • "Perfectly inelastic collisions" usually involve easily deformed objects e.g. wet clay. KJF §9.5
Step 1: Draw two momentum diagrams for both carts immediately before and immediately after the collision, one describing the collision in the lab reference frame, and one describing the collision in the center of mass reference frame.
2 kwi 2019 · I Ch. 6–2 Holt Physics Solution Manual I 4. m = 0.50 kg F1 = 3.00 N to the right ∆t1 = 1.50 s vi,1 = 0 m/s F2 = 4.00 N to the left =−4.00 N ∆t2 = 3.00 s vi,2 = 9.0 m/s to the right a. vf,1 = ⎯ F1 ∆t1 m + mvi,1 vf,1 = 9.0 m/s = b. vf,2 =⎯ F2 ∆t2 m + mvi,2 vf,2 ==⎯ −7. 0 5.5 k 0 g k •m g /s ⎯=−15 m/s vf,2 = 15 m/s to the left −12.0 kg •m/s + 4.5 kg m/s 0.50 kg (−4 ...
Two cars approach a 90o intersection. Neither driver is paying attention to what they are doing, and they collide. After the collision, the cars stick together, and skid to a stop in 14.8 meters at an angle as shown. The two cars have masses of 1300 kg and 1600 kg, as shown.
For two identical cars of the same mass, what would determine if one car has more momentum than another in a two-car collision? The only two factors that can change a car’s momentum are its mass or its velocity (p = mv). If the masses of two cars are equal, the only way one car could have more momentum than another of equal mass would be if
