Answer:
The sum of forces acting on the object is 1.6 N
Step-by-step explanation:
F = force (N)
m = mass (kg)
a = acceleration (m/s²)
F = ma
or rather:
Sum of all Fs = ma
The sum of all forces refers to all forces acting to move the object fowards (e.g. force produced by the engine of a car) take all forces acting to stop the object moving forward (e.g. friction or air resistance)
In this case:
F = 0.08 × 20
F = 1.6 N
