Acar starts from rest and moves around a circular track of radius 37.0 m. its speed increases at the constant rate of 0.440 m/s2. (a) what is the magnitude of its net linear acceleration 18.0 s later? (b) what angle does this net acceleration vector make with the car's velocity at this time?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.