How do i do this? help please!?

Question

Two soccer players kick the same 1-kg ball at the same time in opposite directions. One kicks with a force of 20 N; the other kicks with a force of 12 N. What is the resulting acceleration of the ball, in m/s2.

Answer 1

The forces offset to produce a net force of 8 N

 

since the ball is 1 kg

 

F = ma

 

a = f/m = 8 N/1 kg = 8 (kg m)/(s^2 kg) = 8 m/s^2