Question

A bus decreass its speed 80k/m
to 60 km/h Find the acc.
of the bus​

Answer 1

Answer:  -4km/h

Explanation: Here we have , u = 80km/h , v = 60km/h , t = 5s                                                    

                                                      a = ?

   by using formula v = u + at

we get,    60km/h = 80km/h + a(5)

                60 - 80 = a * 5

                 -20 = a * 5

                a = -20/5

                 a = -4km/h is the required Answer