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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 5 of 5

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

1Motion & graphsIn one dimension, u = -8 m/s and constant a = -2 m/s². Find the signed velocity after 13 s. Round to 3 decimal places if needed. Answer in m/s.
m/s
2Motion & graphsTwo carts approach each other on a straight track at 27 m/s and 10 m/s. How fast is their separation decreasing? Round to 3 decimal places if needed. Answer in m/s.
m/s
3Forces & equilibriumAn ideal spring obeys F = kx with k = 280 N/m. A force of 49 N is applied within its linear range. Find its extension. Round to 3 decimal places if needed. Answer in m.
m
4Forces & equilibriumA crate on a frictionless surface has two horizontal forces on it: 65 N toward the east and 60 N toward the west. (Vertical forces balance.) What happens to the crate’s motion?
5Energy, work & powerA constant 55 N force acts through a 28 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
6Energy, work & powerA 16 kg object changes speed from 6 m/s to 19 m/s. Find final minus initial kinetic energy. Round to 3 decimal places if needed. Answer in J.
J
7Momentum & collisionsCarts 5 kg at 16 m/s and 6 kg at -6 m/s collide and stick. Velocities share one signed axis; external impulse is zero. Find their final velocity. Round to 3 decimal places if needed. Answer in m/s.
m/s
8Momentum & collisionsMomentum changes by +13 kg·m/s during 250 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
N
9Thermal physicsA 1.1 kg sample with specific heat 500 J/(kg·°C) warms by 50 °C. No phase change or heat loss occurs. Find energy supplied. Round to 3 decimal places if needed. Answer in J.
J
10Thermal physicsFor a uniform slab, k = 0.2 W/(m·K), area = 11 m², thickness = 18 cm and temperature difference = 9 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, 4 Ω and 27 Ω are in series across an ideal 37 V source. Find their total electrical power. Round to 3 decimal places if needed. Answer in W.
W
12Electricity & circuitsAn ohmic resistor of 20 Ω has potential difference 9 V. Find current. This is a paper calculation, not a construction instruction. Round to 3 decimal places if needed. Answer in A.
A
13Magnetism & inductionA 480-turn coil has flux change 5 mWb per turn over 190 ms. Find average induced emf magnitude. Round to 3 decimal places if needed. Answer in V.
V
14Magnetism & inductionA 78 cm straight wire carries 10 A perpendicular to a uniform field of 0.1 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.

15Electricity & circuits (Grade 10)In a steady series circuit, current after a resistor is generally what compared with current before it?
16Energy, work & power (Grade 10)A model device transfers energy at constant power 290 W for 52 s. Find the transferred energy. Round to 3 decimal places if needed. Answer in J.
J