Question

Two Forces are exerted on an Object In a Vertical Direction: A 20N force downwards, and 10 N force upwards. The mass of the object is 25KG. WHAT IS THE NET FORCE EXPRESSION?

WORTH 30 POINTS!!! HELP ME PLZ.

Answer 1

When you add up (20N down) and (10N up), 
you get a sum of (10N down).

The mass of the object has no effect on the forces.


Now ... I see 5 points for the answer.
Where are the other 25 coming from ?