As we know f is inversely proportion to time so its frequency is 1/4 Hz
Answer:
A path that allows most of the current in an electric circuit to flow around or away from the principal elements or devices in the circuit.
The sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown. A buildup of static electricity can be caused by tribocharging or by electrostatic induction.
The overall change in velocity is just 20m/s.