Where was runner A located at t = 0 s? Which runner was ahead at t = 48.0 s?

When runner A was at 0.0 m, where was runner B?

How far apart were runners A and B at t = 20.0 s?

Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance

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.

Which wave is the result of amplification and produces a louder sound