Answer:
54 N
Step-by-step explanation:
By Newton's second law the force acting on an object is related to its mass and acceleration
F = m x a where
where m = mass of the object and a is the acceleration
Here m = 8 kg and a = 5m/s² so
F = 8 x 5 =40 Newtons (measure of force)
But there is an opposite force due to friction of 14 Newtons
So net force required to overcome this friction and accelerate the object of mass 8kg to 5m/s² = 40 + 14 = 54 Newtons