Multiple Choice Questions (MCQ) on Kinematics (Motion)

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?

A. Meter per second (m/s)
B. Meter (m)
C. Second (s)
D. Newton (N)

2. Which of the following quantities is a vector?

A. Velocity
B. Speed
C. Distance
D. Time

3. A car moves with a uniform velocity of 20 m/s for 10 seconds. What distance does it cover?

A. 10 m
B. 2000 m
C. 100 m
D. 200 m

4. What is the acceleration of an object that changes its velocity from 0 to 15 m/s in 3 seconds?

A. 3 m/s²
B. 5 m/s²
C. 45 m/s²
D. 0 m/s²

5. An object is thrown vertically upward. At its highest point, what is its velocity and acceleration?

A. Velocity zero, acceleration zero
B. Velocity maximum, acceleration zero
C. Velocity zero, acceleration downward (gravity)
D. Velocity maximum, acceleration upward

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?

A. v = u + at
B. v = u - at
C. v = u + (1/2)at²
D. v = at²

7. Which graph best represents the velocity-time relation for an object moving with constant acceleration?

A. A horizontal straight line
B. A straight line with positive slope
C. A curved line increasing exponentially
D. A horizontal line at zero

8. What force causes centripetal acceleration in uniform circular motion?

A. Gravitational force outward
B. Centrifugal force inward
C. Force directed towards the center of the circle
D. No force is needed

9. An object moves in a circle of radius 2 m with a constant speed of 4 m/s. What is its centripetal acceleration?

A. 2 m/s²
B. 8 m/s²
C. 4 m/s²
D. 16 m/s²

10. What is the period of an object moving in uniform circular motion?

A. Time taken for one complete revolution
B. Number of revolutions per second
C. The angular velocity
D. The radius of the circle

11. What is the velocity of an object dropped from rest after falling freely for 4 seconds? (Assume g = 9.8 m/s²)

A. 19.6 m/s
B. 39.2 m/s
C. 39.2 m/s
D. 9.8 m/s

12. Which equation represents the displacement s of an object starting from rest and accelerating uniformly at a for time t?

A. s = ut
B. s = at
C. s = vt
D. s = (1/2)at²

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?

A. Tangent to the circle at point P
B. Directed toward the center of the circle
C. Directed away from the center
D. Zero acceleration

14. What is the angular velocity ω of an object that completes one revolution in 5 seconds?

A. 2π rad/s
B. 5 rad/s
C. 1.26 rad/s
D. 10 rad/s

15. If a body travels 60 meters in 4 seconds, what is its average speed?

A. 15 m/s
B. 12 m/s
C. 20 m/s
D. 10 m/s

16. What physical quantity is measured in m/s²?

A. Velocity
B. Force
C. Acceleration
D. Distance

17. The slope of a distance-time graph gives:

A. Acceleration
B. Speed
C. Displacement
D. Force

18. Which of the following is an example of uniform motion?

A. A car moving at constant speed in a straight line
B. A ball falling freely
C. A satellite in elliptical orbit
D. A car turning around a corner

19. What happens to the speed of an object in free fall under gravity (ignoring air resistance)?

A. It decreases
B. It becomes zero
C. It remains constant
D. It increases

20. What is the net displacement of an object that returns to its starting point?

A. Equal to the total distance traveled
B. Equal to the average speed multiplied by time
C. Zero
D. Equal to the square of the speed

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