Answer:
1.5 m/s/s
Step-by-step explanation:
This problem can be solved using equation of motion given below

where v is the final velocity
u is the initial velocity
t is the time
given
final velocity = 9 m/s
initial velocity = 0 m/s
t = 6 seconds
lets substitute these value in v = u + at
9 = 0 + a*6
=> 9 = 6a
=> a = 9/6 = 3/2 = 1.5
Thus, acceleration is 1.5 m/s/s