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NUST NET Physics Flashcards
51 question-and-answer cards covering Physics as it is examined in NUST NET. 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.
Write the three equations of motion for uniform acceleration.
v = u + at; s = ut + (1/2)at^2; v^2 = u^2 + 2as, where u = initial velocity, v = final velocity, a = acceleration, s = displacement, t = time.
What does the slope of a velocity-time graph represent, and what does the area under it represent?
The slope gives acceleration; the area under the velocity-time graph gives the displacement.
What is the difference between average velocity and instantaneous velocity?
Average velocity = total displacement / total time over an interval; instantaneous velocity is the velocity at a specific instant (the limit as the time interval approaches zero).
For a body in free fall from rest, what equations apply?
With u=0 and a=g (≈9.8 m/s^2): v = gt; h = (1/2)gt^2; v^2 = 2gh (taking downward as positive).
What is projectile motion?
The two-dimensional motion of an object launched into the air under gravity alone, where horizontal velocity is constant and vertical motion has constant downward acceleration g.
What is the path (trajectory) of a projectile and why?
A parabola, because horizontal displacement increases uniformly with time while vertical displacement changes with t^2 due to gravity.
Give the formula for the time of flight of a projectile launched at angle θ with speed u.
T = (2u sin θ) / g.
Give the formula for the maximum height of a projectile.
H = (u^2 sin^2 θ) / (2g).
Give the formula for the horizontal range of a projectile and the angle for maximum range.
R = (u^2 sin 2θ) / g; maximum range occurs at θ = 45°, giving R_max = u^2 / g.
At the highest point of a projectile's path, what are its velocity components?
The vertical velocity component is zero; only the horizontal component (u cos θ) remains, so speed = u cos θ.
What is relative velocity?
The velocity of one object as observed from the frame of reference of another object: V(A relative to B) = V(A) − V(B).
Two cars move in the same direction at 60 km/h and 40 km/h. What is their relative velocity?
20 km/h (60 − 40). In the same direction, relative velocities subtract.
How do you find relative velocity for two objects moving in opposite directions?
Their speeds add: the relative velocity magnitude = v1 + v2 (directed toward each other).
State Newton's First Law of Motion.
A body remains at rest or in uniform motion in a straight line unless acted upon by a net external force (the law of inertia).
State Newton's Second Law of Motion.
The net force on a body equals the rate of change of its momentum; for constant mass, F = ma (force in the direction of acceleration).
State Newton's Third Law of Motion.
For every action there is an equal and opposite reaction; the forces act on two different bodies.
What is inertia and what does it depend on?
Inertia is a body's resistance to any change in its state of rest or motion; it depends directly on the body's mass.
What is the difference between static friction and kinetic friction?
Static friction acts on a stationary body and adjusts up to a maximum (limiting) value; kinetic (sliding) friction acts on a moving body and is generally smaller and roughly constant. Thus μs > μk.
What is the coefficient of friction and the formula for limiting friction?
The coefficient of friction μ = F/R is the ratio of frictional force to normal reaction; limiting/maximum friction F = μR, where R is the normal force.
State two methods of reducing friction.
Using lubricants (oil/grease), polishing surfaces, using ball or roller bearings, and streamlining bodies to reduce drag (any two).
Define linear momentum and state its SI unit.
Linear momentum p = mv (mass times velocity); it is a vector. SI unit: kg·m/s (or N·s).
Define impulse and state the impulse-momentum theorem.
Impulse = force x time of contact (F·t), measured in N·s. The impulse-momentum theorem states impulse equals the change in momentum: F·t = Δp = m(v − u).
State the law of conservation of linear momentum and a condition for it.
For an isolated system with no net external force, the total linear momentum remains constant; the momentum before a collision equals the momentum after: m1u1 + m2u2 = m1v1 + m2v2.
State the work-energy theorem.
The net work done on a body equals the change in its kinetic energy: W_net = ΔKE = (1/2)mv^2 − (1/2)mu^2.
What this deck covers
The Physics deck follows the NUST NET Physics syllabus — 13 chapters and 50 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 3.9 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 117 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 NUST NET deck?
51 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these NUST NET flashcards free?
Yes. The preview here is free to read with no signup, and the full 51-card deck is free inside the Examius app.
What do the Physics cards cover?
They follow the NUST NET Physics syllabus — 13 chapters and 50 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.