The speed of a bus increases uniformaly from 15km per hour to 60 km per hour in 20 sec find the average speed, the acceleration,the distance travelled during the entire period

Respuesta :

Answer:

Average speed, V = 37.5 Km/h

Acceleration, a = 8035.71 Km/h²

Distance traveled, d = 210 m

Explanation:

Given that,

The initial speed of the bus, u = 15 Km/h

The final speed of the bus, v = 60 Km/h

The time period of the bus is, t = 20 s

                                                    = 0.0056 h

The average speed of the bus

                                   V = (15 + 60) / 2

                                      = 37.5   m/s

    The average speed = 37.5   m/s

The acceleration of the bus

                                   a = (v - u) / t

                                     = (60 - 15) / 0.005

                                     = 8035.71 Km/h²

    The acceleration is = 8035.71 Km/h²

The distance traveled by bus,

                                   d = v x t

                                      = 8035.17 x 0.005

                                      = 0.21 Km or 210 m

The distance traveled =  210 m

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