Question

What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?

Answer 1

This could be answered using Newton's second law of motion which is F = ma.
Where:
F is the net force;
m is the mass; and 
a is the acceleration

but we need to solve for m which is mass, so rearrange the formula for Newton's second law of motion and you will get 

m = F/a

m = 8/1.1

= 7.27 Kg this would be the answer.