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प्रश्न
What are inertia kinds?
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उत्तर
The three kinds of inertia are:
- Inertia of rest,
- Inertia of motion,
- Inertia of direction.
(1) Inertia of rest: The tendency of a body to continue in its state of rest, even when some external unbalanced force is applied to it, is called inertia of rest.
(2) Inertia of motion: The tendency of a body to continue in its state of motion, in a straight line, even when some external unbalanced force acts on it, is called inertia of motion.
(3) Inertia of direction: The tendency of a body by which it is unable to change its direction of motion, even when some external unbalanced force acts on it, is called inertia of direction.
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संबंधित प्रश्न
In the following example, try to identify the number of times the velocity of the ball changes:
“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”.
Also identify the agent supplying the force in each case.
Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.
What name is given to the product of mass and velocity of a body ?
Fill in the following blank with suitable word :
(a) ………………is a measure of the inertia of a body.
A body of mass 25 kg has a momentum of 125 kg.m/s. Calculate the velocity of the body.
Calculate the momentum of the following :
(a) an elephant of mass 2000 kg moving at 5 m/s
(b) a bullet of mass 0.02 kg moving at 400 m/s
The unit of measuring momentum of a moving body is :
What is meant by the term inertia?
Why does a coin, placed on a card, drop into the tumbler when the card is rapidly flicked with a finger?
Why does a ball thrown vertically upwards in a moving train , come back to the thrower's hand ?
