Chapter 9 Impulse and Momentum Essay

- The duration of a collision depends on the material the object is made (usually about 1 to 10 milliseconds (0.001 to 0.010 seconds)).

- When the key is compressed, the force increases rapidly, reaching the maximum value (maximum compression point) when A is stationary and then decreasing as the key re-expands.

- We use Newton's second law to find the final speed; acceleration is the derivative of velocity, so the second rule is as follows.

An object can have a large momentum due to objects of small mass but high speed or low speed but high mass.

The force is the momentum change rate - the possibility to change the quality of the object

Momentum, Impulse, Collision - Determine the momentum of the particle - Increase time and examine the relationship between impulse and momentum. The linear momentum equation p = mv is a small momentum that makes a small mass with a small momentum or large momentum and a large momentum with a small momentum with large momentum and small momentum. Momentum is a very rare and popular topic by writing, but it must be the pulse momentum theorem, the impulse effect on the body. Experiment: Purpose of exercise paper Example: Reduce the impact after hit by about 15 times, reduce the kinetic energy to about a quarter 13 e pulse momentum - radio - 1 - modified 10 - 11 - 07 Pulse - momentum in collision process Theorem The contact force between colliding objects is

If the object has velocity, the object has momentum. Momentum is calculated by multiplying mass and speed. Pulse is a term representing a change in momentum of an object, so it is directly related to momentum. In other words, if the object changes speed, its momentum will change. By definition, this measurable amount of momentum change is the impact of the object. In order to change the momentum of an object, it is necessary to apply force for a certain period of time. Therefore, the change in momentum or pulse (also known as Δp) can be calculated by multiplying the force F x t by the force F x t. If a large force is applied in a short time, there is a possibility that a large momentum change occurs. When small force is applied for a long time, momentum changes greatly. The force applied during this period causes a change in the velocity of the object, which results in a change in momentum.