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Grade 10 · Physics

Grade 10 Physics diagnostic

16 questions on motion & graphs, forces & equilibrium, energy, work & power, momentum & collisions, thermal physics, waves & sound and electricity & circuits, plus 2 from Grade 9. Answer what you can, then check your answers to see which topics are secure and what to practise next.

16 questions7 topicsAbout 20 minutesSet 1 of 5

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

1Motion & graphsTwo carts approach each other on a straight track at 15 m/s and 2 m/s. How fast is their separation decreasing? Round to 3 decimal places if needed. Answer in m/s.
m/s
2Motion & graphsIn one dimension, u = -9 m/s and constant a = 0 m/s². Find the signed velocity after 2 s. Round to 3 decimal places if needed. Answer in m/s.
m/s
3Forces & equilibriumA 16 kg cart has horizontal forces 15 N right and 76 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².
m/s²
4Forces & equilibriumA mass of 5 kg is in a model gravitational field of 1.6 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
N
5Energy, work & powerA constant 120 N force acts through a 16 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 14 kg object changes speed from 0 m/s to 25 m/s. Find final minus initial kinetic energy. Round to 3 decimal places if needed. Answer in J.
J
7Momentum & collisionsA 20 kg object has signed velocity 25 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
8Momentum & collisionsA 5 kg object changes signed velocity from 18 m/s to -20 m/s. Find the net impulse on it. Round to 3 decimal places if needed. Answer in N·s.
N·s
9Thermal physicsA 150 g sample completely melts at its melting temperature. Its latent heat is 260000 J/kg. Ignore losses. Find energy required. Round to 3 decimal places if needed. Answer in J.
J
10Thermal physicsMix 2 kg at 22 °C with 6 kg at 90 °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
11Waves & soundA wave has frequency 77 Hz and wavelength 0.5 m. Find its speed. Round to 3 decimal places if needed. Answer in m/s.
m/s
12Waves & sound76 complete oscillations take 17 s. Find the period. Round to 3 decimal places if needed. Answer in s.
s
13Electricity & circuitsAn ohmic resistor of 25 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
14Electricity & circuitsTwo different resistors are in series. The current through the first resistor is 0.3 A. What is the current through the second resistor? (Assume ideal wires and an ideal battery.)
A

From Grade 9

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

15Motion & graphs (Grade 9)A robot moves 60 m east and then 6 m west along a straight line. Find the total distance travelled. Round to 3 decimal places if needed. Answer in m.
m
16Motion & graphs (Grade 9)A robot moves 25 m east and then 8 m west along a straight line. Find the total distance travelled. Round to 3 decimal places if needed. Answer in m.
m