1. The force that hinders the movement of an object is called "resistance", also known as back drag. A train running on a straight railway is subject to the traction of the locomotive and the resistance of the air and the rail at the same time. The direction of traction and resistance is opposite, traction makes the train speed increase, while resistance makes the train speed decrease. If the traction and resistance balance each other, their effects on the train will cancel each other, and the train will keep moving in a uniform straight line or at rest
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. When a body moves in a liquid, it is forced by the fluid to rece its speed, which is also resistance. For example, when rowing between the oar and the water, the force of water hindering the backward movement of the oar is resistance. Another example is that objects move in the air and are resisted by friction with the air
resistance is not the same as friction, because friction can sometimes make power (e.g. conveyor belt to deliver goods).
2. There are usually two meanings
1. Generally refers to the external force hindering the development or progress of things
2. The force hindering the movement of objects
3. The force that obstructs the movement of an object is called "resistance". A train running on a straight railway is subject to the traction of the locomotive and the resistance of the air and the rail at the same time. The direction of traction and resistance is opposite, traction makes the train speed increase, while resistance makes the train speed decrease
if the traction and resistance balance each other, their effects on the train will cancel each other, and the train will keep moving in a uniform and straight line. When a body moves in a liquid, it is forced by the fluid to rece its speed, which is also resistance
extended data
difference between friction and resistance
when walking or running, people should push backward, and the sole of their feet tends to move backward relative to the ground. At this time, the friction force is moving forward, because it is to prevent the sole of the foot from moving backward, so the direction of the friction force is the same as that of the person. Therefore, in this case, the friction force belongs to power, not resistance
when the friction force on the object is opposite to the movement direction of the object relative to the ground, it is resistance, and when the direction is the same, it is power. Therefore, friction is not necessarily resistance, but also power; There are more forces that can act as resistance. Thrust, pull, elasticity and friction can all be resistance
4. Resistance: as the name suggests, it is the force that hinders the movement of an object. The angle between the direction of the force and the direction of the object's movement is between 90 and 180 (greater than 90 but less than or equal to 180). Supporting force is the force that supports the object and does not move downward. It is a kind of elastic force. The direction is perpendicular to the contact surface of two objects and points to the supported object. Generally speaking, the direction is upward or horizontal
5. Upstairs, it's resistance! Proction resistance is some negative factors in proction, which is not in line with the current proction relations and mode.
6. The resistance point is to stay at the price level controlled by the selling price (bear market) and prevent it from rising. The price at which a trade takes place is equivalent to the price agreed between the bull and the bear. It means that their expectations are consistent.
7. My family has a book that says: rolling resistance, slope resistance, air resistance. There are only three. You said there are four. It is estimated that there is acceleration resistance.
8. The force that obstructs the movement of an object is called "resistance". A train running on a straight railway is subject to the traction of the locomotive and the resistance of the air and the rail at the same time. The direction of traction and resistance is opposite, traction makes the train speed increase, while resistance makes the train speed decrease. If the traction and resistance balance each other, their effects on the train will cancel each other, and the train will keep moving in a uniform straight line. When a body moves in a liquid, it is forced by the fluid to rece its speed, which is also resistance. For example, when rowing between the oar and the water, the force of water hindering the backward movement of the oar is resistance. Another example is that objects move in the air and are resisted by friction with the air.
9. In gas-solid two-phase fluid, solid particles are affected by the gas, which will hinder the movement of particles, so it is called drag resistance
