Question

A FORCE OF 15 N ACTING ON A BODY MOVING WITH AN UNIFORM ACCELERATION OF 3m/s2 calculate the mass of the body

Answer 1

given:
         f =15 N
         a =3m/s2
F= ma
m= F/a 
   = 15/3
   =5

Answer 2

F=m*a
15=m*3
15/3=m
m=5kg

So mass is 5 kg