At a stoplight, a truck traveling at 15 m/s passes a car as it starts from rest. the truck travels at constant velocity and the car accelerates at 3 m/s^2. how much time does the car take to catch up to the truck?

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) =_