Question

What is inertia? Explain inertia of rest and motion. Give an example of each type in daily life .

Answer 1

Answer:

The tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force. an analogous property of other physical quantities that resist changethermal inertia.

The tendency of a body at rest to remain at rest, or of a body in motion to continue moving in a straight line at a constant speed unless a force is applied to it. Mass is a measure of a body's inertia.

More Examples of Inertia of Rest:

When a hanging carpet is beaten with a stick, the dust particles start coming out of it. When a carpet is beaten by stick the carpet is set into motion. But due to inertia, the dust particles remain at rest. Thus they get separated from the carpet.

Answer 2

Answer:

Newton's first law of motion states that "An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." Objects tend to "keep on doing what they're doing." In fact, it is the natural tendency of objects to resist changes in their state of motion. This tendency to resist changes in their state of motion is described as inertia.

Inertia: the resistance an object has to a change in its state of motion.

Inertia of rest : The tendency of a body at rest to remain at rest, or of a body in motion to continue moving in a straight line at a constant speed unless a force is applied to it. Mass is a measure of a body's inertia.

Example:

• when you shake a branch the leaves get detached.  

•  when you beat a carpet the dust particles come out.

• when you are sitting in a car and it starts moving you lean backward.

Inertia of motion: If a body is in a state of motion, then it will continue to move at the same speed in the same direction unless an external force is applied to change its state.

Example:

• When seated on a motorcycle and the motorcyclist suddenly applies brakes, we get a push in the forward direction. This is because we were in motion, and inertia tends to oppose the change in our state.

• When a person jumps out of a moving bus, he tends to move ahead or fall down. This is because he was in motion. On jumping, his feet touch the ground but the rest of the body still tends to remain in motion.

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