Kinematics

Physics, SSC-Punjab Class 9. This chapter is split into 46 topics and has 1,120 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

Scalar Quantities 22 questions
Gradient of a Speed-Time Graph 24 questions
Free Fall and Gravitational Acceleration 24 questions
Acceleration: Concept and Direction 22 questions
Worked Examples 2.1 to 2.6 24 questions
Mechanics, Kinematics and Dynamics 22 questions
Identifying the Type of Motion 26 questions
Classifying Scalar and Vector Quantities 24 questions
Vector Quantities 21 questions
Third Equation of Motion: 2aS = v^2 - vi^2 25 questions
Shapes of Distance-Time Graphs 25 questions
Calculating Average Acceleration 28 questions
Relativity and the Universal Speed Limit 21 questions
Exercise Multiple Choice Questions of Chapter 2 23 questions
Key Points, Do You Know and Interest Boxes of Chapter 2 22 questions
Drawing Vectors to Scale 25 questions
Representation of Vectors 23 questions
Distance 22 questions
Average Speed and Instantaneous Speed 23 questions
Gradient of a Distance-Time Graph 29 questions
Exercise Short and Comprehensive Questions of Chapter 2 29 questions
Problems Combining the Equations of Motion 30 questions
Distance and Displacement Problems 27 questions
Displacement 22 questions
Exercise-style Numerical Problems of Chapter 2 30 questions
Speed, Distance and Time Calculations 23 questions
Equations of Motion: Symbols and Assumptions 24 questions
Shapes of Speed-Time Graphs 23 questions
Free Fall Problems: Bodies Thrown Upward 25 questions
Free Fall Problems: Bodies Dropped from Rest 26 questions
Area Under a Speed-Time Graph 29 questions
Converting Between km/h and m/s 30 questions
Average Velocity Calculations 25 questions
Types of Motion 23 questions
Translatory Motion: Linear, Random and Circular 22 questions
Uniform and Non-uniform Velocity 22 questions
Second Equation of Motion: S = vit + 1/2 at^2 26 questions
Velocity: Definition and Units 22 questions
Resultant Vector and Head-to-Tail Rule 27 questions
Uniform and Non-uniform Acceleration 22 questions
Rest and Motion 23 questions
Speed: Definition and Units 22 questions
Acceleration: Formula and Units 22 questions
Speed and Velocity Compared 23 questions
Graphs: Axes, Scales and Plotting 23 questions
First Equation of Motion: v = vi + at 25 questions

Sample questions: Kinematics

10 sample questions with the correct answer and an explanation. Try to answer each one before reading the explanation.

Q1. A vehicle covers 200 km at 30 km h⁻¹ and then another 200 km at 45 km h⁻¹. Its average speed for the whole journey is:

A. 41 km h⁻¹
B. 75 km h⁻¹
C. 1350 km h⁻¹
D. 36 km h⁻¹(correct answer)

Answer: D.Total distance = 400 km; total time = 200/30 + 200/45 = 11.11111111111111111111111111111111111111; average speed = 36 (not the simple mean of the two speeds).

Q2. A vehicle covers 300 m at 20 m s⁻¹ and then another 300 m at 60 m s⁻¹. Its average speed for the whole journey is:

A. 60 m s⁻¹
B. 30 m s⁻¹(correct answer)
C. 80 m s⁻¹
D. 35 m s⁻¹

Answer: B.Total distance = 600 m; total time = 300/20 + 300/60 = 20; average speed = 30 (not the simple mean of the two speeds).

Q3. A vehicle covers 300 km at 15 km h⁻¹ and then another 300 km at 30 km h⁻¹. Its average speed for the whole journey is:

A. 45 km h⁻¹
B. 20 km h⁻¹(correct answer)
C. 40 km h⁻¹
D. 450 km h⁻¹

Answer: B.Total distance = 600 km; total time = 300/15 + 300/30 = 30; average speed = 20 (not the simple mean of the two speeds).

Q4. A vehicle covers 90 m at 40 m s⁻¹ and then another 90 m at 60 m s⁻¹. Its average speed for the whole journey is:

A. 50 m s⁻¹
B. 100 m s⁻¹
C. 96 m s⁻¹
D. 48 m s⁻¹(correct answer)

Answer: D.Total distance = 180 m; total time = 90/40 + 90/60 = 3.75; average speed = 48 (not the simple mean of the two speeds).

Q5. A vehicle covers 300 km at 40 km h⁻¹ and then another 300 km at 120 km h⁻¹. Its average speed for the whole journey is:

A. 80 km h⁻¹
B. 65 km h⁻¹
C. 120 km h⁻¹
D. 60 km h⁻¹(correct answer)

Answer: D.Total distance = 600 km; total time = 300/40 + 300/120 = 10; average speed = 60 (not the simple mean of the two speeds).

Q6. A vehicle covers 150 m at 12 m s⁻¹ and then another 150 m at 24 m s⁻¹. Its average speed for the whole journey is:

A. 18 m s⁻¹
B. 16 m s⁻¹(correct answer)
C. 32 m s⁻¹
D. 288 m s⁻¹

Answer: B.Total distance = 300 m; total time = 150/12 + 150/24 = 18.75; average speed = 16 (not the simple mean of the two speeds).

Q7. A vehicle covers 200 km at 20 km h⁻¹ and then another 200 km at 30 km h⁻¹. Its average speed for the whole journey is:

A. 10 km h⁻¹
B. 50 km h⁻¹
C. 24 km h⁻¹(correct answer)
D. 600 km h⁻¹

Answer: C.Total distance = 400 km; total time = 200/20 + 200/30 = 16.66666666666666666666666666666666666667; average speed = 24 (not the simple mean of the two speeds).

Q8. A vehicle covers 240 km at 60 km h⁻¹ and then another 240 km at 90 km h⁻¹. Its average speed for the whole journey is:

A. 72 km h⁻¹(correct answer)
B. 75 km h⁻¹
C. 30 km h⁻¹
D. 77 km h⁻¹

Answer: A.Total distance = 480 km; total time = 240/60 + 240/90 = 6.666666666666666666666666666666666666667; average speed = 72 (not the simple mean of the two speeds).

Q9. A vehicle covers 300 m at 10 m s⁻¹ and then another 300 m at 40 m s⁻¹. Its average speed for the whole journey is:

A. 30 m s⁻¹
B. 400 m s⁻¹
C. 16 m s⁻¹(correct answer)
D. 25 m s⁻¹

Answer: C.Total distance = 600 m; total time = 300/10 + 300/40 = 37.5; average speed = 16 (not the simple mean of the two speeds).

Q10. A vehicle covers 45 km at 30 km h⁻¹ and then another 45 km at 60 km h⁻¹. Its average speed for the whole journey is:

A. 90 km h⁻¹
B. 1800 km h⁻¹
C. 40 km h⁻¹(correct answer)
D. 80 km h⁻¹

Answer: C.Total distance = 90 km; total time = 45/30 + 45/60 = 2.25; average speed = 40 (not the simple mean of the two speeds).

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