Question

according to this diagram, what is the net force of this object?
300 newtons
500 newtons
800 newtons
1100 newtons
f_{air}=300n
f_{grav}=800n

Explanation:

Step1: Define net - force formula

Net force $F_{net}=F_{1}+F_{2}$, where forces in opposite directions have opposite signs. Here, let the upward - direction be positive and the downward - direction be negative. $F_{air} = 300N$ (upward) and $F_{grav}=800N$ (downward).

Step2: Calculate net force

$F_{net}=F_{air}-F_{grav}=300 - 800=- 500N$. The magnitude of the net force is 500N.

Answer:

500 newtons