Class 6th standard science lesson number 9 motion and type of motion answer
Answers
Answer:
In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed and time
Explanation:
Rectilinear, Circular and Periodic motion
Rectilinear Motion: Motion of the object in straight line path is called rectilinear motion. For example : Motion of train on track, motion of ants in a straight path,motion of freely falling stone from top of the building towards the ground.
Circular Motion: Motion of object in a circular path is called circular motion. For example: Children playing ringa ringa roses or moving in a circle, motion of Earth around the Sun.
Periodic Motion : Motion of a object which repeats itself after a certain period of time is called periodic motion. For example : Motion of Earth around the sun is periodic as well as circular as it repeats it motion after time of 365 days. Motion of simple pendulum is periodic.Motion of minute and second hand in a watch is periodic.
EXAMPLE
Examples of different types of motion
Sr.No. Types of Motion Examples
1 Rectilinear a)March past by the soldiers in straight line. b)Motion of falling objects from certain height
2 Circular a) Motion of satellites around planets. b) Motion of car turning to a curved track
3 Rotational a) Motion of giant wheel b) Motion of wheels of moving vehicle
4 Periodic a) Motion of simple pendulum b) Motion of Earth on its own axis.
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