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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 2 of 5

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

1Motion & graphsA model cart starts at 36 m/s and slows uniformly at 1 m/s² until rest. Ignore reaction time. Find the stopping time. Round to 3 decimal places if needed. Answer in s.
s
2Motion & graphsA model object leaves a ledge horizontally at 26 m/s from height 180 m. Use g = 10 m/s² and no air resistance. Find its horizontal range to the ground. Round to 3 decimal places if needed. Answer in m.
m
3Forces & equilibriumTwo perpendicular forces of 304 N and 570 N act on a point. Find the magnitude of their resultant. Round to 3 decimal places if needed. Answer in N.
N
4Forces & equilibriumOn a weightless balanced beam, 34 N acts 3 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 & powerA 16 kg object changes speed from 8 m/s to 21 m/s. Find final minus initial kinetic energy. Round to 3 decimal places if needed. Answer in J.
J
6Energy, work & powerA device receives 1170 J and has useful-energy efficiency 35%. Find the useful output energy. Round to 3 decimal places if needed. Answer in J.
J
7Momentum & collisionsMomentum changes by +27 kg·m/s during 40 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
N
8Momentum & collisionsA 7 kg object has signed velocity 9 m/s on a chosen axis. Find its signed momentum. Round to 3 decimal places if needed. Answer in kg·m/s.
kg·m/s
9Thermal physicsMix 9 kg at 12 °C with 9 kg at 53 °C of the same liquid. Assume equal constant specific heat, no phase change, negligible container heat capacity and no losses. Find equilibrium temperature. Round to 3 decimal places if needed. Answer in °C.
°C
10Thermal physicsA 0.6 kg sample with specific heat 900 J/(kg·°C) warms by 16 °C. No phase change or heat loss occurs. Find energy supplied. Round to 3 decimal places if needed. Answer in J.
J
11Electricity & circuitsA theoretical 21 V ideal source supplies parallel ohmic resistors 12 Ω and 38 Ω. Find total source current. Round to 3 decimal places if needed. Answer in A.
A
12Electricity & circuitsA model device uses constant power 800 W for 11 h. Find the energy in kilowatt-hours. Round to 3 decimal places if needed. Answer in kWh.
kWh
13Magnetism & inductionA 430-turn coil has flux change 13 mWb per turn over 490 ms. Find average induced emf magnitude. Round to 3 decimal places if needed. Answer in V.
V
14Magnetism & inductionAn ideal AC transformer has primary 200 turns, secondary 900 turns and primary voltage 32 V. Find secondary voltage. Paper model only. Round to 3 decimal places if needed. Answer in V.
V

From Grade 10

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

15Electricity & circuits (Grade 10)A current of 2 A flows for 6 s. Find charge transferred.
C
16Energy, work & power (Grade 10)A model device transfers energy at constant power 695 W for 24 s. Find the transferred energy. Round to 3 decimal places if needed. Answer in J.
J