PHYSICS Lecture Notes - Lecture 2: Kinematics, Bicycle Wheel, Bulk Modulus
Document Summary
Work, energy, and power: crash course physics #9. At the end of kinematics, you learned about velocity. However, you realized that velocity alone is not sufficient to fully represent motion. We introduced the product of mass into velocity, which is called momentum. But force alone is also inadequate at times. For example, the work done by force may be zero. However, if we apply force, and the object moves in the direction of the force, we feel positive about our progress, and we conclude that the work done is positive. But if there is another force in the opposing direction that is stronger than ours, the object will move in the opposite direction. In such a case, we feel negative about our force because we are not achieving our desired outcome. We explored the rules governing collisions between different moving objects, taking into account momentum, impulse, center of mass, and.
