CIE iGCSE Co-Ordinated Science P1.2 Motion Exam Style Questions Paper 1
Question
An object is falling freely near the Earth without air resistance. Which statement about the acceleration of the object is correct?
A. It is constant, but not zero.
B. It is decreasing.
C. It is increasing.
D. It is zero.
▶️Answer/Explanation
Answer: A
Explanation: In free fall near the Earth, the acceleration due to gravity is constant at approximately 9.8 m/s², assuming no air resistance.
Question
A girl runs 5000 m in 1200 seconds and then walks a further 3000 m in 1800 seconds. What is her average speed for this journey?
A. 1.7 m/s
B. 2.7 m/s
C. 2.9 m/s
D. 5.8 m/s
▶️Answer/Explanation
Answer: B
Explanation: The total distance is 5000 m + 3000 m = 8000 m. The total time is 1200 s + 1800 s = 3000 s. Average speed = total distance / total time = 8000 m / 3000 s = 2.7 m/s.
Question
A vehicle moves a total distance of 300 m in 40 seconds. What is its average speed?
A. 0.13 m/s
B. 7.5 m/s
C. 340 m/s
D. 12,000 m/s
▶️Answer/Explanation
Answer: B
Explanation: Average speed is calculated as total distance divided by total time. Therefore, 300 m / 40 s = 7.5 m/s.
Question
Which distance–time graph represents an object that is decelerating?
▶️Answer/Explanation
Answer: A
Explanation: A decelerating object will have a decreasing slope on a distance-time graph, indicating that its speed is decreasing over time.