Grade 10 Physics practice

What is on the worksheet

1. Why does knowing average force not determine the largest force during contact?

2. A 13 kg cart has horizontal forces 144 N right and 93 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.

3. Momentum changes by +37 kg·m/s during 240 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.

4. A normal force of 337 N acts uniformly over 0.43 m². Find the pressure. Round to 3 decimal places if needed. Answer in Pa.

5. Use one signed axis. Initial velocity is 5 m/s and constant acceleration is -3 m/s² for 8 s. Find the displacement. Round to 3 decimal places if needed. Answer in m.

6. A 19 kg object has signed velocity 16 m/s on a chosen axis. Find its signed momentum. Round to 3 decimal places if needed. Answer in kg·m/s.

7. A 12 kg object changes signed velocity from -13 m/s to -14 m/s. Find the net impulse on it. Round to 3 decimal places if needed. Answer in N·s.

8. A model device transfers energy at constant power 300 W for 46 s. Find the transferred energy. Round to 3 decimal places if needed. Answer in J.

9. A model object leaves a ledge horizontally at 22 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.

10. In a theoretical circuit, 35 Ω and 9 Ω are in series across an ideal 34 V source. Find their total electrical power. Round to 3 decimal places if needed. Answer in W.

11. A model sample begins with 416000 undecayed nuclei. Half-life is 4 h. Find the expected number still undecayed after 16 h. Round to 3 decimal places if needed.

12. An ohmic resistor of 73 Ω has potential difference 17 V. Find current. This is a paper calculation, not a construction instruction. Round to 3 decimal places if needed. Answer in A.

13. A 5 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.

14. A constant current of 3.8 A flows for 49 s. Find transferred charge. Round to 3 decimal places if needed. Answer in C.

15. On a weightless balanced beam, 56 N acts 9 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.

16. A theoretical 24 V ideal source supplies parallel ohmic resistors 34 Ω and 23 Ω. Find total source current. Round to 3 decimal places if needed. Answer in A.

17. An echo returns after 1050 ms. The sound speed in this medium is 1500 m/s. Find the distance to the stationary reflector. Round to 3 decimal places if needed. Answer in m.

18. A 37 kg load is raised vertically by 24 m in a field g = 10 N/kg. Find its gravitational potential-energy gain. Round to 3 decimal places if needed. Answer in J.

19. Carts 3 kg at 11 m/s and 10 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.

20. Two carts approach each other on a straight track at 2 m/s and 20 m/s. How fast is their separation decreasing? Round to 3 decimal places if needed. Answer in m/s.