Core Concepts in Introductory Physics
Eight medium-difficulty multiple-choice questions that probe definitions, applications, misconceptions, and reasoning across foundational physics ideas.
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: What physical quantity measures an object's resistance to changes in its motion?
Momentum
Weight
Density
Mass
Question 2: Which law most directly relates net force, mass, and acceleration?
Newton's third law
Newton's second law
Conservation of energy
Hooke's law
Question 3: In a frictionless system, what happens to the mechanical energy of an isolated object?
It becomes undefined
It remains constant
It steadily decreases
It steadily increases
Question 4: When analyzing a collision, which conserved quantity always applies in an isolated system?
Mechanical energy
Kinetic energy
Momentum of each object
Total momentum
Question 5: Which statement best describes static equilibrium for a rigid body?
Net force and net torque are zero
Net torque is zero but net force can be nonzero
Net force is zero but net torque can be nonzero
Only kinetic energy must be constant
Question 6: A common misconception: heavier objects fall faster in vacuum. Which claim corrects this?
Mass cancels only on Earth
All objects accelerate equally under gravity in vacuum
Heavier objects always produce more drag
Only denser objects fall faster
Question 7: Which approach is best when solving complex mechanics problems systematically?
Draw free-body diagrams and apply conserved quantities
Only use dimensional analysis
Plug numbers immediately into formulas
Assume friction is always negligible
Question 8: Which description best captures what power measures in a physical process?
Force applied times distance
Total energy stored in a system
Rate of energy transfer or work done per time
Energy per unit mass