here are my 3 questions ; Two automobiles of equal mass approach an intersection

Question

here are my 3 questions ;

Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 12.5 m/s toward the east and the other is traveling north with speed v2i. Neither driver sees the other. The vehicles de in the intersection and stick together, leaving parallel skid marks at an angle of 65.0o north of east. Determine the initial speed v2i of the northward-moving vehicle. m/s The speed limit for both roads is 35 mi/h and the driver of the northward-moving vehicle claims he was within the speed limit when the collision occurred. Is he telling the truth? O Yes No

Explanation / Answer

1) 26.806 m/s and No, he is not telling the truth

2)velocity of struck ball = 3.18 m/s at angle 58 degrees

3) The center of mass of the earth-moon system as measured from the center of the earth is 4.66869x10^6 m

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