What is inertia?
Inertia is defined as the property of an object to remain in its original state of uniform linear motion or at rest.
Inertia is an inherent property of all objects, whether they are solids, liquids or gases, and whether they are moving or at rest. All objects have inertia.
Inertia represents the ease with which an object can change its state of motion, and the amount of inertia is only related to the mass of the object. An object with a large mass is relatively difficult to change its state of motion, i.e., it has a large inertia; an object with a small mass is relatively easy to change its state of motion, i.e., it has a small inertia.
The difference between inertia and force
- The physical meaning is different. Inertia is the property of the object itself, always has this nature, it has nothing to do with external conditions; force is only when the object and the object interaction, leaving the object is no force.
- The elements of composition are different. Inertia only size, no direction and point of action, and the size of no specific value, no unit; force is composed of size, direction and point of action of the three elements, its size has a specific value, the unit is the ox.
- Inertia is the property of keeping the motion of an object unchanged; force is the property of changing the motion of an object.
Daily inertia Examples
- A car in motion can’t stop at once
- A Mercedes bus is full of passengers, several of whom are “standers”. As someone crossed the road, the driver braked urgently and a young man fell forward violently, bumping into a lady in front of him. The lady looked unhappy and gave the young man a look and said, “Look at you.” The young man was red-faced and made amends: “Sorry, it’s not virtue, it’s inertia”! The lady and the other passengers were amused by the remark.
- The dog, soaked to the skin, kept wriggling his body to shake off the water on his fur.
- I was not standing on the bus. Suddenly the brakes were applied and the whole body leaned forward.
- Hit the water.
- The fan, you turn it off, and its fan continues to turn.
- When you trip over a stone on the road, your body leans forward.
- Stepping on a watermelon rind and leaning backwards.