- #1

gikiian

- 98

- 0

Hey friends. I wanted to know how exactly would a dynamicist define deceleration of a car on a road with humps and dips. Actually I always thought that deceleration of car on the road will be the vector a (see the diagram), however, in a sample problem in my dynamics book, it the car's deceleration is taken as the vector a_t (see the diagram), but it is not explicitly mentioned to be the tangential component. So how do we differentiate between the two cases?