Dynamics
Start practice →40 questions · free, no account to start
What you'll learn
The forces that act on objects, the distinction between mass and weight, how a resultant force produces acceleration via F = ma, and how friction and air resistance shape real motion.
- Contact forces need touching, non-contact forces do not
- Mass is constant, weight is a force that depends on location
- Mass is a measure of an object's inertia
- Balanced forces mean no change in motion
- Unbalanced forces change an object's motion
- Every force has an equal and opposite reaction force
- Resultant force equals mass times acceleration
- Friction and air resistance can lead to a terminal velocity