D.Answer in detail.
1. What are the different types of motion? Give examples.
2. How are vibratory and oscillatory motions related to periodic motion?
3. How would you determine the average speed in a motion?
4. Differentiate between periodic motion and non-periodic motion. Give examples.
5. A car covers a distance of 500 km with an average speed of 10 km h-¹. How much time does it take to cover the distance?
Answers
Answer:
1.• Rectilinear a)March past by the soldiers in straight line. b)Motion of falling objects from certain height
•Circular a) Motion of satellites around planets. b) Motion of car turning to a curved track
• Rotational a) Motion of giant wheel b) Motion of wheels of moving vehicle
• Periodic a) Motion of simple pendulum b) Motion of Earth on its own axis.
2. Any motion that repeats itself over and over again at regular intervals of time is called periodic motion. ... If a body moves back and forth repeatedly about its mean position, its motion is said to be oscillatory or vibratory or harmonic motion.
3. To calculate the average speed of an object, you must know the total distance an object travels and the total elapsed time of its whole journey. The three parts in the triangle are set up in their correct positions mathematically: To get average speed, s , divide total distance by elapsed time: Dt.
4. For example, the motion of the earth is periodic motion. Its time interval is 365.25 days and hence we can say for certain where its position will be in the future provided no external force hinders the motion. Non periodic motion does not repeat itself with time.
5. time = distance / speed
= 500 / 10
= 50 hr.
Explanation:
hope it helped