You just saw an infomercial that states, "This fitness program will change your average appearance. Included for free is a workout mat and an app with step-by-step instructions when you use the promo code on screen." What technique has the advertising company used to persuade you to buy the fitness program?

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

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) =_