Question

A bus decreases its speed from 80 km/h to60 km/h in 5 second find the acceleration of the bus​

Answer 1

Answer:

A bus decreases its speed from 80 km/h to 60 km/h in 5 seconds. Find the acceleration of the bus. So, the bus is decelerating at a rate of -1.11 m/s2

Answer 2

Answer:

Acceleration = - 14400 km/hr

(Retardation / deceleration due to negative sign)

Explanation:

Here, V₁ = 80 km/h

          V₂ = 60 km/h

         t = 5 sec = 5/3600 hr

  Acceleration = Change in velocity/ time taken

                         = (V₂ - V₁) / t

                         = (60 - 80) / (5/3600)

                          = (-20) x 3600 / 5

                           = -4 x 3600

                           Acceleration = - 14400 km/hr

                   (Retardation / deceleration due to negative sign)