Question

if F1 = 300N F2=500N acting in the opposite direction on the some body then FNet =________?​

Answer 1

| Vector F1 | = 300

| Vector F2 | = 500

angle between them = 180°

R² = |Vector F1|² + |Vector F2|² + 2Vector F1 × Vector F2 × cos θ

==> R² = 300² + 500² + 2×300×500×-1

==> R² = 90000 + 250000 - 30000

==> R² = 250000 + 60000

==> R² = 310000

==> R = 556.77 N