physics problem?

Question

A net force changes the velocity of a 10 kg object by 1m/s every second. How long will it take this net force to change the velocity of a 100 kg object by 1 m/s?

Answer 1

F=ma
V=at :a=V/t

F=m (V/t)

F1/F2=1= (m1/m2)(V1/V2)(t2/t1)
lets substitute some numbers

F1/F2=1= (10/100)(1/1)(t2/t1) so
1=t2/(10 t1)
t2=10 t1


I guess it is 10 times a s much (LOL)