Answer the following:
(1) Explain with proper examples − ‘Motion is relative’.
(2) State any five examples of uniform circular motion.
(3) Illustrate with examples where the motion of the body can not be directly perceived but can be experienced.
Answer the following:
(1) Explain with proper examples − ‘Motion is relative’.
(2) State any five examples of uniform circular motion.
(3) Illustrate with examples where the motion of the body can not be directly perceived but can be experienced.
(1) Yes, motion is relative. It depends upon the reference frame of an observer.
For example, a bus is moving at a speed of 40 km/hr with respect to a person standing at the bus stand, while it is at rest with respect to the person driving or sitting in it. As we know the Earth is moving around the Sun so, Earth is in motion with respect to the Sun but the Earth is at rest with respect to us.
(2) When a body moves along a circular arc or a circle with constant speed, it is said that the body possesses a uniform circular motion.
Examples of a uniform circular motion are:
(a) Motion of a car along a circular path
(b) Motion of the electron in its orbit
(c) Motion of the planets in their orbit
(d) Motion of the moon in its orbit
(e) Motion of the satellites in their orbit
(3) There are many examples of motion of a body in which motion cannot be directly perceived but can be experienced. Such examples are a flow of blood through our veins and arteries and air during a cyclone.
(1) Yes, motion is relative. It depends upon the reference frame of an observer.
For example, a bus is moving at a speed of 40 km/hr with respect to a person standing at the bus stand, while it is at rest with respect to the person driving or sitting in it. As we know the Earth is moving around the Sun so, Earth is in motion with respect to the Sun but the Earth is at rest with respect to us.
(2) When a body moves along a circular arc or a circle with constant speed, it is said that the body possesses a uniform circular motion.
Examples of a uniform circular motion are:
(a) Motion of a car along a circular path
(b) Motion of the electron in its orbit
(c) Motion of the planets in their orbit
(d) Motion of the moon in its orbit
(e) Motion of the satellites in their orbit
(3) There are many examples of motion of a body in which motion cannot be directly perceived but can be experienced. Such examples are a flow of blood through our veins and arteries and air during a cyclone.
