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92+ Free Angola 12th Grade Physics (Exame Nacional de Física) Practice Questions

Prepare for the Angola 12th Grade National Examination — Physics (Física — Código 123) exam with instant access — no signup required.

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2026 Statistics

Key Facts: Angola 12th Grade Physics (Exame Nacional de Física) Exam

92

English-language MCQ study adaptations in this bank

OpenExamPrep reviewed bank

16 top-level items

Top-level structure of the published 2026 official paper

INADE published paper

120 + 30

Official minutes plus tolerance

Decreto Executivo 81/26

0–200 → 0–20

Official scoring conversion

Decreto Executivo 81/26

Official paper: 16 top-level items, 120 minutes plus 30 minutes tolerance, scored 0–200 and converted to 0–20. Practice bank: 92 English-language MCQ study adaptations aligned to the published scope, not an official format simulation.

Sample Angola 12th Grade Physics (Exame Nacional de Física) Practice Questions

Try these sample questions to test your Angola 12th Grade Physics (Exame Nacional de Física) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 92+ question experience with AI tutoring.

1A vehicle traveling along a straight horizontal road accelerates uniformly from an initial velocity of 10 m/s to a final velocity of 30 m/s over a displacement of 100 m. What is the magnitude of the vehicle's constant acceleration?
A.4.0 m/s^2
B.2.0 m/s^2
C.5.0 m/s^2
D.8.0 m/s^2
Explanation: Using Torricelli's kinematic equation v^2 = v_0^2 + 2aΔx, we substitute the known values: (30)^2 = (10)^2 + 2a(100). This simplifies to 900 = 100 + 200a, which yields 200a = 800, so a = 4.0 m/s^2.
2A projectile is launched horizontally with an initial speed of 20 m/s from the edge of a cliff 45 m above flat ground. Neglecting air resistance and taking g = 10 m/s^2, what is the horizontal distance (range) traveled by the projectile before impact?
A.45 m
B.60 m
C.90 m
D.120 m
Explanation: The vertical motion determines time of flight: h = 1/2 g t^2 => 45 = 1/2(10)t^2 = 5t^2 => t^2 = 9 => t = 3.0 s. The horizontal velocity is constant at v_0x = 20 m/s. The horizontal range is R = v_0x * t = 20 m/s * 3.0 s = 60 m.
3A soccer ball is kicked from ground level with an initial velocity of 40 m/s at an angle of 30° above the horizontal. Taking g = 10 m/s^2 and sin(30°) = 0.50, what maximum vertical height does the ball reach above the ground?
A.15 m
B.40 m
C.20 m
D.80 m
Explanation: The initial vertical component of velocity is v_0y = v_0 * sin(30°) = 40 * 0.50 = 20 m/s. At maximum height, the vertical velocity is zero: v_y^2 = v_0y^2 - 2gH => 0 = (20)^2 - 2(10)H. Thus, 20H = 400, giving H = 20 m.
4A block of mass 5.0 kg rests on a frictionless horizontal floor. A pulling force of magnitude F = 25 N is applied at an angle of 37° above the horizontal. Given cos(37°) = 0.80 and sin(37°) = 0.60, what is the horizontal acceleration of the block?
A.3.0 m/s^2
B.6.25 m/s^2
C.5.0 m/s^2
D.4.0 m/s^2
Explanation: The net horizontal force accelerating the block is F_x = F * cos(37°) = 25 N * 0.80 = 20 N. By Newton's second law (F_net = m * a), the acceleration is a = F_x / m = 20 N / 5.0 kg = 4.0 m/s^2.
5A block of mass 4.0 kg is placed at rest on an inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between the block and the plane is μ_s = 0.60. Taking g = 10 m/s^2, sin(30°) = 0.50, and cos(30°) = 0.87, which statement correctly describes the friction force acting on the block?
A.The block remains stationary, and the static friction force is exactly 20 N acting up the incline.
B.The block slides down the incline because the downhill gravitational component exceeds maximum static friction.
C.The block remains stationary, and the static friction force is 20.88 N acting up the incline.
D.The static friction force is zero because the block is at rest.
Explanation: The downhill gravitational component is F_gx = m * g * sin(30°) = 4.0 * 10 * 0.50 = 20 N. The normal force is N = m * g * cos(30°) = 4.0 * 10 * 0.87 = 34.8 N. The maximum available static friction is f_s,max = μ_s * N = 0.60 * 34.8 N = 20.88 N. Since F_gx (20 N) <= f_s,max (20.88 N), the block does not slip, and static friction self-adjusts to exactly balance the downhill force: f_s = 20 N up the incline.
6A textbook of mass 2.0 kg is held stationary against a vertical wall by applying a horizontal force F perpendicular to the wall. The coefficient of static friction between the book and the wall is μ_s = 0.40. Taking g = 10 m/s^2, what is the minimum horizontal force F required to prevent the book from slipping downward?
A.8.0 N
B.50 N
C.20 N
D.80 N
Explanation: The downward gravitational force is W = m * g = 2.0 kg * 10 m/s^2 = 20 N. To maintain vertical equilibrium, static friction must equal the weight: f_s = W = 20 N. The maximum static friction is f_s,max = μ_s * N = μ_s * F. Setting f_s,max >= W gives 0.40 * F >= 20 N => F >= 20 / 0.40 = 50 N.
7In an ideal Atwood machine, two masses m_1 = 3.0 kg and m_2 = 2.0 kg are connected by a light inextensible string passing over a frictionless, massless pulley. Taking g = 10 m/s^2, what is the magnitude of the acceleration of the system?
A.1.0 m/s^2
B.4.0 m/s^2
C.2.0 m/s^2
D.5.0 m/s^2
Explanation: Applying Newton's second law to the Atwood system, the net driving gravitational force is (m_1 - m_2)g and the total accelerated mass is (m_1 + m_2). Thus, a = (m_1 - m_2)g / (m_1 + m_2) = (3.0 - 2.0)(10) / (3.0 + 2.0) = 10 / 5.0 = 2.0 m/s^2.
8A car of mass 1200 kg negotiates an unbanked circular curve of radius R = 80 m on a flat horizontal road at a constant speed of 20 m/s. Taking g = 10 m/s^2, what is the minimum coefficient of static friction μ_s required between the tires and the road to prevent the car from skidding?
A.0.25
B.0.80
C.0.65
D.0.50
Explanation: The centripetal force required to turn the car is provided entirely by static friction: f_s = m * v^2 / R. The maximum static friction is f_s,max = μ_s * N = μ_s * m * g. Setting μ_s * m * g >= m * v^2 / R gives μ_s >= v^2 / (g * R) = (20)^2 / (10 * 80) = 400 / 800 = 0.50.
9A highway curve of radius R = 150 m is engineered for a design speed of v = 30 m/s (108 km/h). What is the ideal banking angle θ of the road such that a vehicle can negotiate the turn safely even in the complete absence of friction? (Take g = 10 m/s^2)
A.θ = arctan(0.60)
B.θ = arctan(0.45)
C.θ = arctan(0.20)
D.θ = arctan(0.75)
Explanation: For a frictionless banked curve, the horizontal component of the normal force provides the centripetal force (N * sin θ = m * v^2 / R) and the vertical component balances gravity (N * cos θ = m * g). Dividing these equations gives tan θ = v^2 / (g * R) = (30)^2 / (10 * 150) = 900 / 1500 = 0.60. Thus, θ = arctan(0.60).
10A horse pulls a cart forward along a level road. According to Newton's third law, the cart exerts an equal and opposite force backward on the horse. Why does the horse-cart system accelerate forward?
A.The horse pulls the cart slightly before the cart pulls back, creating a brief net forward force.
B.The action and reaction forces act on different bodies (horse on cart, cart on horse), while the forward net force on the system is provided by the ground pushing forward on the horse's hooves.
C.The horse is more massive than the cart, so its inertia overcomes the reaction force.
D.Newton's third law only applies to static systems, not to accelerating systems.
Explanation: Action-reaction pairs never cancel each other because they act on different objects. The force of the horse on the cart accelerates the cart. The forward acceleration of the horse-and-cart system is produced by the external static friction force exerted forward by the ground on the horse's hooves, which exceeds the backward rolling friction of the cart.

About the Angola 12th Grade Physics (Exame Nacional de Física) Exam

This is the INADE 12th-grade national examination in Physics (Física), code 123, for eligible students following the Angolan curriculum. The official assessment is an in-person written paper combining selection, association, and calculation or constructed-response items and uses Portuguese. This page provides an English-language MCQ study adaptation only; official names and target-language material integral to language skills are preserved.

Assessment

INADE administers the 12th-grade Physics (Física) paper (code 123) under the 2025/2026 national-exam regulation. The official Information-Prova and published paper define the scope reflected below. The assessment is an in-person written paper combining selection, association, and calculation or constructed-response items; its official language setting is Portuguese.

Time Limit

120 minutes (+30 minutes tolerance)

Passing Score

The paper is scored from 0 to 200 points and converted to the 0–20 scale. Decreto Executivo 81/26 assigns weighting and progression rules to separate learning-assessment regulations and does not publish a standalone 10/20 pass mark for this paper.

Exam Fee

No separate candidate exam fee is published in the official 2025/2026 INADE national-exam materials. (Instituto Nacional de Avaliação e de Desenvolvimento da Educação (INADE), Ministério da Educação (MED), Angola)

Angola 12th Grade Physics (Exame Nacional de Física) Exam Content Outline

Published scope

Mechanics and energy

Forces, motion, gravitation, work, energy, momentum, fluids, and related problem solving.

Published scope

Gases and thermodynamics

Kinetic theory, state variables, heat, thermodynamic processes, and energy transfer.

Published scope

Electricity and circuits

Electric fields, potential, current, resistance, power, and direct-current circuits.

Published scope

Waves and optics

Oscillation, waves, sound, geometrical and wave optics.

Published scope

Magnetism and induction

Magnetic forces and fields, electromagnetic induction, and applications.

How to Pass the Angola 12th Grade Physics (Exame Nacional de Física) Exam

What You Need to Know

  • Passing score: The paper is scored from 0 to 200 points and converted to the 0–20 scale. Decreto Executivo 81/26 assigns weighting and progression rules to separate learning-assessment regulations and does not publish a standalone 10/20 pass mark for this paper.
  • Assessment: INADE administers the 12th-grade Physics (Física) paper (code 123) under the 2025/2026 national-exam regulation. The official Information-Prova and published paper define the scope reflected below. The assessment is an in-person written paper combining selection, association, and calculation or constructed-response items; its official language setting is Portuguese.
  • Time limit: 120 minutes (+30 minutes tolerance)
  • Exam fee: No separate candidate exam fee is published in the official 2025/2026 INADE national-exam materials.

Keys to Passing

  • Work through all 92 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Angola 12th Grade Physics (Exame Nacional de Física) Study Tips from Top Performers

1Use the official Information-Prova to organize review around: Mechanics and energy; Gases and thermodynamics; Electricity and circuits; Waves and optics; Magnetism and induction.
2Work through the published official paper and its classification criteria to practise the real response types and required working.
3Use this MCQ bank for concept checks, then practise explanations, calculations, source analysis, or extended writing in the official assessment language.

Frequently Asked Questions

What is the official format?

INADE publishes 16 top-level items for the 2026 paper. It is an in-person written paper combining selection, association, and calculation or constructed-response items, not a 100-question MCQ test.

How long is the official paper?

The regulation sets 120 minutes plus 30 minutes tolerance for 12th-grade national papers.

How is it scored?

The official paper totals 200 raw points, converted to the 0–20 scale. The current exam regulation refers weighting and progression to separate learning-assessment rules.

Who is eligible?

Eligible 12th-grade students following the Angolan curriculum must be registered in PGDEN and meet the admission conditions in Decreto Executivo 81/26, including the attendance and discipline requirements.

Does this bank reproduce the official exam?

No. These 92 questions are English-language MCQ study adaptations. They are not an official translation, do not reproduce the official item mix, and do not substitute for written-response practice.