Answer:
a = 6 m/s²
Step-by-step explanation:
Force is the product of mass and acceleration. That means acceleration can be found from the net force and the mass:
F = ma
a = F/m
The net force on the block is the sum of all of the forces. If forces to the right are taken as positive, we have ...
a = (3N +8N +6N -5N)/(2 kg) = (12 N)/(2 kg) = 6 N/kg
a = 6 m/s²
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Additional comment
A newton is a derived unit equal to ...
N = kg·m/s²
so the ratio N/kg has units m/s², acceleration.