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National MDCAT Physics Flashcards
56 question-and-answer cards covering Physics as it is examined in National MDCAT. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Physics deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
State the law of conservation of energy.
Energy can neither be created nor destroyed; it can only be transformed from one form to another, and the total energy of an isolated system remains constant.
For a freely falling body, what relationship between KE and PE follows from energy conservation?
The sum KE + PE remains constant; as the body falls, PE decreases and KE increases by an equal amount (ignoring air resistance).
What is the escape velocity formula and its approximate value for Earth?
v_esc = √(2GM/R) = √(2gR), approximately 11.2 km/s for Earth.
Define angular displacement and angular velocity with their units.
Angular displacement θ is the angle swept (radians). Angular velocity ω = θ/t (rad/s) is the rate of change of angular displacement.
What is the relationship between linear velocity and angular velocity?
v = rω, where r is the radius of the circular path.
Define angular acceleration and relate it to linear (tangential) acceleration.
Angular acceleration α = Δω/Δt (rad/s²). Tangential linear acceleration a = rα.
What is the relationship between time period T and angular velocity ω?
ω = 2π/T = 2πf, where f is the frequency.
Define centripetal force and give its formula.
The net force directed toward the center that keeps a body in circular motion: Fc = mv²/r = mrω². It is always directed toward the center.
What is centripetal acceleration and its formula?
The center-directed acceleration in circular motion: ac = v²/r = rω².
Define moment of inertia and state what it depends on.
Moment of inertia (I) is the rotational analogue of mass; it measures resistance to angular acceleration. I = Σmr². It depends on mass and its distribution relative to the axis of rotation.
Give the moment of inertia of a solid disc/cylinder and a thin hoop/ring about their central axis.
Solid disc/cylinder: I = ½MR². Thin hoop/ring: I = MR².
State the equation of continuity for fluid flow.
A1v1 = A2v2 (the product of cross-sectional area and fluid speed is constant for an incompressible fluid). It expresses conservation of mass; speed increases where area decreases.
What are the properties of an ideal fluid?
It is incompressible, non-viscous, its flow is steady (streamline), and irrotational.
What is the difference between streamline (laminar) and turbulent flow?
In streamline flow every fluid particle follows a smooth path with constant velocity at each point; in turbulent flow the motion is irregular with eddies and varying velocity.
State Bernoulli's equation.
P + ½ρv² + ρgh = constant along a streamline, expressing conservation of energy for an ideal fluid (pressure energy + kinetic energy + potential energy per unit volume).
According to Bernoulli's principle, what is the relationship between fluid speed and pressure?
Where the fluid speed is high, the pressure is low, and where the speed is low, the pressure is high (for horizontal flow).
Define viscosity and name its SI unit.
Viscosity is the internal frictional resistance of a fluid to flow (between adjacent fluid layers). SI unit of coefficient of viscosity: pascal·second (Pa·s) or N·s/m².
State Stokes' law for a sphere moving through a viscous fluid.
F = 6πηrv, where η is the coefficient of viscosity, r the sphere's radius, and v its velocity. The drag force opposes motion.
Define terminal velocity and give its formula for a sphere falling in a viscous fluid.
The constant maximum velocity reached when drag plus buoyancy balances weight: vt = 2r²(ρ − ρ₀)g / (9η), where ρ is the sphere's density and ρ₀ the fluid's density.
What is a progressive (travelling) wave, and what are the two main types?
A wave that transfers energy from one point to another through a medium. Types: transverse (particle vibration perpendicular to propagation) and longitudinal (particle vibration parallel to propagation).
State the wave equation relating speed, frequency, and wavelength.
v = fλ, where v is wave speed, f is frequency, and λ is wavelength.
How are stationary (standing) waves formed and what are nodes and antinodes?
Formed by the superposition of two identical waves travelling in opposite directions. Nodes are points of zero amplitude (no displacement); antinodes are points of maximum amplitude.
What is the distance between two consecutive nodes (or two consecutive antinodes) in a stationary wave?
λ/2 (half the wavelength). The distance between a node and the adjacent antinode is λ/4.
State two key differences between progressive and stationary waves.
Progressive waves transfer energy and all particles have the same amplitude (with phase lag); stationary waves do not transfer energy and particle amplitude varies from zero (nodes) to maximum (antinodes).
What this deck covers
The Physics deck follows the National MDCAT Physics syllabus — 16 chapters and 49 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 3.5 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 126 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Physics flashcards FAQ
How many Physics flashcards are in this National MDCAT deck?
56 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these National MDCAT flashcards free?
Yes. The preview here is free to read with no signup, and the full 56-card deck is free inside the Examius app.
What do the Physics cards cover?
They follow the National MDCAT Physics syllabus — 16 chapters and 49 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.