Car A is driving west at 25 km/h and car B is driving west at 45 km/h. Do the two cars have the same speed? Do the two cars have the same velocity? please explain.

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_