17/04/2026
🎯 50 LIKELY JAMB PHYSICS QUESTIONS & ANSWERS
🔹 MECHANICS
A body moves with u = 2 m/s and a = 3 m/s² for 4 s. Find v.
👉 v = u + at = 2 + (3×4) = 14 m/s
A car accelerates from rest at 2 m/s² for 5 s. Find distance.
👉 s = (1/2)at² = (1/2)(2)(25) = 25 m
If u = 5 m/s, a = 2 m/s², s = 20 m, find v.
👉 v² = 25 + 80 = 105 → 10.25 m/s
A force of 10 N acts on mass 2 kg. Find acceleration.
👉 a = F/m = 5 m/s²
Weight of 5 kg (g = 10 m/s²)?
👉 W = 5×10 = 50 N
KE of 2 kg moving at 3 m/s?
👉 KE = ½×2×9 = 9 J
PE of 2 kg at height 5 m?
👉 PE = 2×10×5 = 100 J
Work done = 200 J in 10 s. Power?
👉 P = 200/10 = 20 W
A body travels 100 m in 20 s. Velocity?
👉 v = 100/20 = 5 m/s
Acceleration from 10 m/s to 20 m/s in 5 s?
👉 a = (20−10)/5 = 2 m/s²
🔹 DENSITY & PRESSURE
Mass = 10 kg, Volume = 2 m³. Density?
👉 ρ = 10/2 = 5 kg/m³
Force = 20 N, Area = 4 m². Pressure?
👉 P = 20/4 = 5 Pa
Liquid pressure at 2 m (ρ = 1000)?
👉 P = 1000×10×2 = 20000 Pa
Upthrust (ρ = 1000, V = 0.01)?
👉 U = 1000×10×0.01 = 100 N
🔹 MOMENTS
Force = 10 N, distance = 2 m. Moment?
👉 = 20 Nm
If clockwise = anticlockwise moment, system is?
👉 In equilibrium
🔹 PROJECTILES
u = 10 m/s, θ = 45°, g = 10. Range?
👉 R = 100/10 = 10 m
Time of flight?
👉 T = (2×10×0.707)/10 ≈ 1.4 s
Maximum height?
👉 H ≈ 2.5 m
🔹 CIRCULAR MOTION
m = 2 kg, v = 4 m/s, r = 2 m. Force?
👉 F = 2×16/2 = 16 N
ω = 5 rad/s, r = 2 m. Velocity?
👉 v = 10 m/s
v = 10, r = 2. ω?
👉 = 5 rad/s
🔹 WAVES
f = 5 Hz, λ = 2 m. Speed?
👉 v = 10 m/s
f = 10 Hz. Period?
👉 T = 0.1 s
Wave travels 100 m in 20 s. Speed?
👉 = 5 m/s
f = 50 Hz. ω?
👉 = 100π rad/s
🔹 HEAT
m = 2 kg, c = 500, ΔT = 10
👉 Q = 10000 J
m = 2 kg, L = 200
👉 Q = 400 J
Efficiency = 50/100 ×100
👉 = 50%
Gas law constant relation?
👉 PV = nRT
🔹 ELECTRICITY
V = 10 V, R = 5Ω
👉 I = 2 A
V = 12, I = 2
👉 P = 24 W
I = 2, R = 5
👉 P = 20 W
V = 10, R = 5
👉 P = 20 W
V = 10, I = 2, t = 5
👉 E = 100 J
I = 2 A, t = 5 s
👉 Q = 10 C
ρ = 2, L = 5, A = 1
👉 R = 10Ω
🔹 MAGNETISM
B = 2, I = 3, L = 4
👉 F = 24 N
q = 2, v = 3, B = 4
👉 F = 24 N
🔹 OPTICS
sin i = 0.5, s
