Question

Akash starts from rest and attains 54 km per hour in 20 seconds calculate its acceleration

Answer 1

hey dear
here is your answer

given data :

initial velocity (u) = 0

final velocity (v) = 54 km/hr or 15 m/s

time taken (t) = 20 seconds

to find : acceleration

here we go

solution :

by using first equation of motion

v = u+at

15 = 0+20a

a = 15/20 or 0.75 m/s²

hope it helps :)

Answer 2

velocity= 54×5/18 = 15m/s

a=(v-u)/t
  = (15-0)/20
  =15/20
  =0.75m/s^2