Answering these carefully designed multiple-choice questions on kinematics and circular motion is an effective way for students in Papua New Guinea to prepare for their national examinations. These questions cover fundamental concepts such as displacement, velocity, acceleration, and projectile motion, all of which are essential topics in the physics curriculum. By practicing these questions, students reinforce their understanding of both theoretical principles and practical problem-solving skills. Including questions with diagrams helps develop spatial reasoning and the ability to interpret visual information, which is a key skill tested in exams. Moreover, the questions emphasize clear distinctions between related concepts, such as vectors versus scalars and uniform versus accelerated motion, ensuring students grasp the nuances required for high exam performance. Overall, this targeted practice builds confidence and sharpens critical thinking, helping students perform well and meet national standards in Papua New Guinea’s physics assessments.
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1. What is the SI unit of displacement?
2. Which of the following quantities is a vector?
3. A car moves with a uniform velocity of 20 m/s for 10 seconds. What distance does it cover?
4. What is the acceleration of an object that changes its velocity from 0 to 15 m/s in 3 seconds?
5. An object is thrown vertically upward. At its highest point, what is its velocity and acceleration?
6. What is the formula to calculate the final velocity v of an object under constant acceleration a after time t, starting from initial velocity u?
7. Which graph best represents the velocity-time relation for an object moving with constant acceleration?
8. What force causes centripetal acceleration in uniform circular motion?
9. An object moves in a circle of radius 2 m with a constant speed of 4 m/s. What is its centripetal acceleration?
10. What is the period of an object moving in uniform circular motion?
11. What is the velocity of an object dropped from rest after falling freely for 4 seconds? (Assume g = 9.8 m/s²)
12. Which equation represents the displacement s of an object starting from rest and accelerating uniformly at a for time t?
13. In the diagram below, a car moves along a circular track of radius r. What direction does the acceleration vector point at point P?
