PHYSICS FINAL EXAM 2027 – 300+ PRACTICE QUESTIONS WITH CORRECT ANSWERS & RATIONALES | MECHANICS, ELECTRICITY, WAVES, THERMODYNAMICS, MODERN PHYSICS

Page 1 of 148



PHYSICS FINAL EXAM 2027 WITH CORRECT

ANSWERS AND MULTIPLE QUESTIONS




1. A car accelerates from rest at 3 m/s² for 5 seconds. What

is its final velocity?

A) 5 m/s

B) 15 m/s

C) 8 m/s

D) 0.6 m/s

Correct Answer: B

Rationale: v = u + at = 0 + (3)(5) = 15 m/s.

2. A 2 kg ball is dropped from a height of 20 m. Ignoring air

resistance, what is its speed just before impact? (g = 10 m/s²)

A) 10 m/s

,Page 2 of 148


B) 20 m/s

C) 14.1 m/s

D) 400 m/s

Correct Answer: B

Rationale: v² = u² + 2gh = 0 + 2(10)(20) = 400 → v = 20

m/s.

3. A force of 10 N acts on a 5 kg object. What is its

acceleration?

A) 0.5 m/s²

B) 2 m/s²

C) 50 m/s²

D) 15 m/s²

Correct Answer: B

Rationale: a = F/m = 10/5 = 2 m/s².

4. Scenario: A 60 kg astronaut in space pushes off a 120 kg

satellite with a force of 300 N for 0.2 seconds. What is the

astronaut’s final velocity?

,Page 3 of 148


A) 0.5 m/s

B) 1.0 m/s

C) 2.0 m/s

D) 0 m/s

Correct Answer: B

Rationale: Impulse = FΔt = 300 × 0.2 = 60 N·s = Δp = mΔv

→ Δv = = 1.0 m/s.

5. Two masses 3 kg and 6 kg are 2 m apart. Gravitational

force between them? (G = 6.67×10⁻¹¹ N·m²/kg²)

A) 3.0×10⁻¹⁰ N

B) 2.0×10⁻¹⁰ N

C) 1.5×10⁻¹⁰ N

D) 3.0×10⁻⁹ N

Correct Answer: A

Rationale: F = G m₁m₂/r² = (6.67e-11)(3×6)/4 = (6.67e-

11×18)/4 = 3.0×10⁻¹⁰ N.

, Page 4 of 148


6. A 500 g object has kinetic energy 100 J. Its speed is:

A) 10 m/s

B) 14.14 m/s

C) 20 m/s

D) 200 m/s

Correct Answer: C

Rationale: KE = ½ mv² → 100 = ½ (0.5) v² → 100 = 0.25 v²

→ v² = 400 → v = 20 m/s.

7. Scenario: A roller coaster car (500 kg) at height 30 m has

speed 10 m/s. Total mechanical energy? (g = 10 m/s²)

A) 150,000 J

B) 175,000 J

C) 200,000 J

D) 125,000 J

Correct Answer: B

Rationale: PE = mgh = 500×10×30 = 150,000 J. KE =

½×500×100 = 25,000 J. Total = 175,000 J.