The average speed of the football is 15 meters per second. Just divide both of the numbers by 4 :)
Answer:
B it decreases
Explanation:
the movement of a positive test charge in the direction of an electric field would be like a mass falling downward within Earth's gravitational field. Both movements would be like going with nature and would occur without the need of work by an external force. This motion would result in the loss of potential energy
as it is given that


now we will have

now the magnitude of this vector is given as


now to find the direction we can use




B is your answer oscillating