Answer to Question #41006 in Mechanics | Relativity for alzahra ali
In a nutshell. Ambulance slides without friction when it is on the incline. And one uses an energy conservation law here: a car takes some a speed during sliding. When car runs on a horizontal surface, there is some a friction. And here one uses the second Newton's law.
Otherwise, please say what do you not understand.
Can you please explain b more I did not understand it