Forces

• Apply Newton’s third law to interaction pairs. • Recall examples of interaction types: gravity, electrostatics, magnetism, and contact forces. • Describe how these interactions involve pairs of objects exerting force on each other. • Represent interaction forces as vectors. • Define weight and describe its measurement. • Apply the weight equation: $weight\ (N) = mass\ (kg) \times gravitational\ field\ strength\ (N/kg)$