Chapter Exam

Chapter-2 Motion — Online MCQ Test

Q: Which of the following is a scalar quantity?

Answer: C. Speed — Speed is a scalar quantity as it only has magnitude and no direction. Velocity, displacement, and acceleration are all vector quantities with both magnitude and direction.

Q: What is the SI unit of acceleration?

Answer: B. m/s² — The SI unit of acceleration is metres per second squared (m/s²), which represents the change in velocity per unit time.

Q: A distance-time graph shows a straight line with a steep positive slope. What does this indicate?

Answer: B. The object is moving at constant high speed — A straight line on a distance-time graph indicates constant speed. A steep positive slope indicates the object covers large distances in small time intervals, meaning high constant speed.

Q: A ball is thrown upward with initial velocity 30 m/s. At what time will it return to the same height? (g = 10 m/s²)

Answer: B. 6 seconds — Using v = u + at, at maximum height v = 0: t = u/g = 30/10 = 3 s to reach the top. Total time = 2 × 3 = 6 seconds to return to the same height.

PHYSICS · Grade 10 · IGCSE cambridge

Practice Chapter-2 Motion with a free chapter-wise online MCQ test for IGCSE cambridge Grade 10 PHYSICS. This chapter covers: Speed velocity and acceleration interpreting distance-time and speed-time graphs and free fall.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-2 Motion — Important Questions & Answers (FAQ)

Frequently asked questions from IGCSE cambridge Grade 10 PHYSICS — Chapter-2 Motion, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a scalar quantity?

A. Velocity
B. Displacement
C. Speed ✓
D. Acceleration

Answer: C. Speed
Speed is a scalar quantity as it only has magnitude and no direction. Velocity, displacement, and acceleration are all vector quantities with both magnitude and direction.

What is the SI unit of acceleration?

A. m/s
B. m/s² ✓
C. km/h
D. m

Answer: B. m/s²
The SI unit of acceleration is metres per second squared (m/s²), which represents the change in velocity per unit time.

A distance-time graph shows a straight line with a steep positive slope. What does this indicate?

A. The object is at rest
B. The object is moving at constant high speed ✓
C. The object is decelerating
D. The object is accelerating uniformly

Answer: B. The object is moving at constant high speed
A straight line on a distance-time graph indicates constant speed. A steep positive slope indicates the object covers large distances in small time intervals, meaning high constant speed.

A speed-time graph shows a horizontal line at 25 m/s. What can be concluded about the object's motion?

A. The object is accelerating uniformly
B. The object is moving at constant velocity with zero acceleration ✓
C. The object is decelerating
D. The object is at rest

Answer: B. The object is moving at constant velocity with zero acceleration
A horizontal line on a speed-time graph indicates constant speed and zero acceleration, meaning the velocity remains unchanged throughout the motion.

A ball is thrown upward with initial velocity 30 m/s. At what time will it return to the same height? (g = 10 m/s²)

A. 3 seconds
B. 6 seconds ✓
C. 9 seconds
D. 15 seconds

Answer: B. 6 seconds
Using v = u + at, at maximum height v = 0: t = u/g = 30/10 = 3 s to reach the top. Total time = 2 × 3 = 6 seconds to return to the same height.