Back to the lesson
Forces and Newton’s Laws flashcards
0/23
23 cards remaining
All 23 cards in this deckShow
- What is a free-body diagram?Force Diagrams
- A diagram of external forces on one selected object.
- What is a normal force?Force Diagrams
- A support force perpendicular to a contacting surface.
- Should forces exerted by the object appear on its diagram?Force Diagrams
- No; show forces acting on it.
- Is velocity a force?Force Diagrams
- No; it describes motion, not an interaction.
- What belongs in a free-body diagram?Force Diagrams
- Forces acting on the selected object.
- What is net force?Force Diagrams
- The vector sum of the forces.
- What direction is a normal force?Force Diagrams
- Perpendicular to the contact surface.
- Where do third-law partners act?Force Diagrams
- On different interacting objects.
- What is Newton’s second law for constant mass?Newton’s Three Laws
- ΣF = ma.
- What direction is acceleration?Newton’s Three Laws
- The direction of net force.
- What is 1 N in base units?Newton’s Three Laws
- 1 kg·m/s².
- What happens to a at fixed F if m doubles?Newton’s Three Laws
- Acceleration halves.
- What is inertia?Newton’s Three Laws
- Resistance to a change in motion.
- Which force belongs in F=ma?Newton’s Three Laws
- The net force.
- What does zero net force imply in an inertial frame?Newton’s Three Laws
- Zero acceleration.
- Do equal third-law forces imply equal accelerations?Newton’s Three Laws
- No; the objects can have different masses.
- What is static friction?Friction
- Friction at a contact without relative sliding.
- What is kinetic friction?Friction
- Friction while surfaces slide relative to each other.
- What direction does friction oppose?Friction
- Relative motion or its tendency at the contact.
- Can static friction propel motion?Friction
- Yes, as with walking or driven tires.
- What distinguishes static friction?Friction
- It acts without relative sliding at the contact.
- What does μ describe?Friction
- An approximate friction coefficient for the contacting surfaces.
- Which force is multiplied by μ?Friction
- The normal-force magnitude.