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Grade 11 · Physics

Grade 11 Physics diagnostic

16 questions on motion & graphs, forces & equilibrium, energy, work & power, momentum & collisions, thermal physics, electricity & circuits and magnetism & induction, plus 2 from Grade 10. Answer what you can, then check your answers to see which topics are secure and what to practise next.

16 questions7 topicsAbout 20 minutesSet 4 of 5

Skip a question if you do not know the answer. It is better than guessing, because it shows what to practise.

1Motion & graphsSigned velocity changes from 3 m/s to 35 m/s in 14 s. Find the average acceleration. Round to 3 decimal places if needed. Answer in m/s².
m/s²
2Motion & graphsUse one signed axis. Initial velocity is 18 m/s and constant acceleration is -2 m/s² for 3 s. Find the displacement. Round to 3 decimal places if needed. Answer in m.
m
3Forces & equilibriumAn ideal spring obeys F = kx with k = 270 N/m. A force of 60 N is applied within its linear range. Find its extension. Round to 3 decimal places if needed. Answer in m.
m
4Forces & equilibriumOn a weightless balanced beam, 117 N acts 8 m left of the pivot. What downward force at 10 m right balances it? Forces are perpendicular to the beam. Round to 3 decimal places if needed. Answer in N.
N
5Energy, work & powerAn ideal linear spring has k = 670 N/m and extension 43 cm. Find the stored elastic energy. Round to 3 decimal places if needed. Answer in J.
J
6Energy, work & powerA constant 47 N force acts through a 3 m displacement. The cosine of the angle between them is 1. Find the work by this force. Round to 3 decimal places if needed. Answer in J.
J
7Momentum & collisionsA 10 kg object changes signed velocity from -12 m/s to -3 m/s. Find the net impulse on it. Round to 3 decimal places if needed. Answer in N·s.
N·s
8Momentum & collisionsMomentum changes by +2 kg·m/s during 230 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
N
9Thermal physicsA 620 g sample completely melts at its melting temperature. Its latent heat is 340000 J/kg. Ignore losses. Find energy required. Round to 3 decimal places if needed. Answer in J.
J
10Thermal physicsFor a uniform slab, k = 0.4 W/(m·K), area = 18 m², thickness = 2 cm and temperature difference = 6 K. Assuming steady one-dimensional conduction, find thermal power. Round to 3 decimal places if needed. Answer in W.
W
11Electricity & circuitsIn a theoretical circuit, 1 Ω and 14 Ω are in series across an ideal 49 V source. Find their total electrical power. Round to 3 decimal places if needed. Answer in W.
W
12Electricity & circuitsA constant current of 2.8 A flows for 91 s. Find transferred charge. Round to 3 decimal places if needed. Answer in C.
C
13Magnetism & inductionAn ideal AC transformer has primary 1100 turns, secondary 100 turns and primary voltage 22 V. Find secondary voltage. Paper model only. Round to 3 decimal places if needed. Answer in V.
V
14Magnetism & inductionA 68 cm straight wire carries 12 A perpendicular to a uniform field of 0.3 T. Find magnetic force magnitude. Round to 3 decimal places if needed. Answer in N.
N

From Grade 10

These questions check skills from the grade below, so gaps can be spotted early.

15Forces & equilibrium (Grade 10)A mass of 96 kg is in a model gravitational field of 3.7 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
N
16Motion & graphs (Grade 10)On an east-positive axis, position changes from -19 m to 49 m in 4 s. Find the signed average velocity. Round to 3 decimal places if needed. Answer in m/s.
m/s