1. Waleed is studying errors in measurement. He learns that random errors can be reduced by taking the average of multiple readings. Which of the following is an example of a random error?
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2. Area under a speed-time graph represents:
3. Average speed is defined as:
4. Julia is analyzing the motion of an object that is thrown upwards. She wants to find the time it takes to reach the maximum height. Which equation should she use?
5. Waseem is studying a distance-time graph. The graph is a curve that is concave downwards. What does this indicate about the motion?
6. Precision refers to:
7. Resultant of two vectors at right angles is found using:
8. Force is a vector quantity because it has:
9. Which prefix represents 10⁶?
10. Physics mainly deals with the study of:
11. Ibrahim drops a stone from the top of a building. He observes that the stone falls with increasing speed. What is the acceleration of the stone due to gravity near the Earth's surface?
12. Which quantity determines the direction of motion?
13. Acceleration due to gravity acts:
14. Laura is studying force and change in momentum. She learns that force equals the rate of change of momentum. If the momentum of an object changes from 10 kg m/s to 30 kg m/s in 2 seconds, what is the force?
15. Which instrument is used to measure time?
16. Mohamed is learning about impulse and change in momentum. He understands that impulse is force multiplied by time. A force of 10 N acts on an object for 3 seconds. What is the impulse?
17. Waleed is learning about forces. He understands that forces can be contact or non-contact. Which of the following is a non-contact force?
18. Uma is analyzing a distance-time graph. The graph is a straight line with a positive slope. What does the slope of the graph represent?
19. Mohamed is studying prefixes. He learns that prefixes are used to denote multiples and submultiples of SI units. What does the prefix 'kilo' represent?
20. Seat belts are used in cars to overcome effects of:
21. Which type of motion is shown by a spinning top?
22. Uma is analyzing the motion of a car that is moving with a constant acceleration. She knows the initial velocity, final velocity, and time. Which equation of motion can she use to find the displacement?
23. Qasim is learning about SI units. He understands that the SI system is used worldwide for scientific measurements. Which of the following is an SI derived unit?
24. Laura is learning about momentum. She understands that momentum is conserved in a closed system. In a collision, what happens to the total momentum of the system?
25. Emma is analyzing a distance-time graph. The graph is a straight line with a positive slope. What does this indicate about the speed?
26. Newton’s First Law applies to bodies in:
27. Ibrahim is studying Newton's third law. He learns that action and reaction are equal and opposite. Which of the following is an example of this law?
28. Quinn is studying a speed-time graph. The graph is a straight line with a positive slope starting from the origin. What can he infer about the initial velocity of the object?
29. Ibrahim is studying the addition of vector quantities. He learns that vectors can be added graphically. What is the method of adding vectors head-to-tail called?
30. Qasim is learning about fundamental forces. He understands that electromagnetic force is responsible for electric and magnetic interactions. Which of the following is a result of electromagnetic force?