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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 3 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 a model without air resistance, an object is launched vertically upward at 42 m/s on Earth (use the rounded value g = 10 m/s²). Find its time to maximum height. Round to 3 decimal places if needed. Answer in s.
s
2Motion & graphsA cart moves along a straight track. Its position is recorded every second: t = 0 s: 2 m; t = 1 s: 6 m; t = 2 s: 10 m; t = 3 s: 14 m; t = 4 s: 18 m. How is the cart moving?
3Forces & equilibriumOn a weightless balanced beam, 43 N acts 5 m left of the pivot. What downward force at 5 m right balances it? Forces are perpendicular to the beam. Round to 3 decimal places if needed. Answer in N.
N
4Forces & equilibriumA crate on a frictionless surface has two horizontal forces on it: 75 N toward the east and 60 N toward the west. (Vertical forces balance.) What happens to the crate’s motion?
5Energy, work & powerA constant 17 N force acts through a 24 m displacement. The cosine of the angle between them is -0.5. Find the work by this force. Round to 3 decimal places if needed. Answer in J.
J
6Energy, work & powerA 11 kg object changes speed from 10 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 -13 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 & collisionsMomentum changes by +53 kg·m/s during 20 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
N
9Thermal physicsA 200 g sample completely melts at its melting temperature. Its latent heat is 210000 J/kg. Ignore losses. Find energy required. Round to 3 decimal places if needed. Answer in J.
J
10Thermal physicsA 2.8 kg sample with specific heat 4200 J/(kg·°C) warms by 39 °C. No phase change or heat loss occurs. Find energy supplied. Round to 3 decimal places if needed. Answer in J.
J
11Waves & soundA wave has frequency 38 Hz and wavelength 3.4 m. Find its speed. Round to 3 decimal places if needed. Answer in m/s.
m/s
12Waves & sound48 complete oscillations take 30 s. Find the period. Round to 3 decimal places if needed. Answer in s.
s
13Electricity & circuitsIn a theoretical circuit, 17 Ω and 29 Ω are in series across an ideal 23 V source. Find their total electrical power. Round to 3 decimal places if needed. Answer in W.
W
14Electricity & circuitsA theoretical 12 V ideal source supplies parallel ohmic resistors 24 Ω and 16 Ω. Find total source current. Round to 3 decimal places if needed. Answer in A.
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 133 m east and then 74 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 rover travels 156 m in 60 s, then 161 m in 61 s. Find its average speed for both stages. Round to 3 decimal places if needed. Answer in m/s.
m/s