Question

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

Answer 1

Average speed, V = 37.5 Km/h

Acceleration, a = 8035.71 Km/h²

Distance traveled, d = 210 m

Step-by-step 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