Which equation shows how to calculate the mass of an object, given its
acceleration and the net force acting on it?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

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.

Is a volume of space that is empty of matter.