Question

The speed of a bus increase uniform from 15ms to 60ms in 20s 1) calculate the average speed 2) the acceleration 3) the distance travelled during the entire period

Answer 1

Answer:

solved

Explanation:

calculate

1) the average speed

v = u +at , 60 = 15  + 20a  , a = 2.25 m/s²

average speed  Vav= u+v/2 = 75/2 = 37.5 m/s

2) the acceleration  , a = 2.25 m/s²

3) the distance travelled during the entire period = Vav.t = 20x75/2 = 750m.