all three question

1. A car with a mass of 1256 kg and a speed of 14.2. mls heading south approaches an intersection. At the same time, a minivan with a mass of 1552 kg and speed of 22.3 mfs heading west is also approaching the intersection. The car and the minivan collide and stick together. What is the velocity of the wrecked vehicles just after the collision? 2. a) Calculate the ideal speed of a car taking a 125 m radius curve banked at 15.00. (b) What is the minimum coefficient of friction needed for a driver to take the same curve at 30.0 kmfh? (Note: no mark will be given to solutions without FBD). 3. BoxA has a charge of 0,1 = +3.00 #0 and mass of 543 9. Box B has a mass of 752 g and charge QB = 4.35 #6 and is located at a distance of 12.0 cm from box A. Box 0 has no charge and has a mass of 905 9. Considering all three boxes and pulley remain at rest, find the tension in string 1 and string 2. Take 6 = 36.0\" and the triction between the incline and boxes A and B to be zero. (Note: no mark will be given to solutions without FBD)