Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Rest and Motion Kinematics
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Rest and Motion Kinematics
Consider the motion of the tip of the minute hand of a clock. Over...
Consider the motion of the tip of the minute hand of a clock. Over the course of one hour,
Options
- Athe average speed is zero
- Bthe displacement is zero
- Cthe average velocity is zero
- Dthe distance covered is zero
Correct answer
C. the average velocity is zero
Step-by-step solution
Over the course of one hour, the minute hand of a clock completes exactly one full revolution.
The initial and final positions of the tip of the minute hand are identical, meaning the shortest distance between them is zero. Therefore, the displacement is zero.
Average velocity is defined as the ratio of displacement to total time taken. Since the displacement is zero, the average velocity is also zero.
The distance covered by the tip is the circumference of the circular path, , which is non-zero. Consequently, the average speed, being the ratio of total distance to time, is also non-zero.
The initial and final positions of the tip of the minute hand are identical, meaning the shortest distance between them is zero. Therefore, the displacement is zero.
Average velocity is defined as the ratio of displacement to total time taken. Since the displacement is zero, the average velocity is also zero.
The distance covered by the tip is the circumference of the circular path, , which is non-zero. Consequently, the average speed, being the ratio of total distance to time, is also non-zero.