A car starts at rest and accelerates with an acceleration of 4.51 m/s2. After the car travels a distance of 355 m, it slows down with an acceleration of -2.34 m/s2 until its speed reaches 25.4 m/s. What is the total displacement of the car?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?