Motion is a change in position of an object with respect to time. It can be described using concepts such as distance, displacement, speed, velocity, and acceleration.

Distance is the total length of the path traveled by an object, while displacement is the change in position of the object from its initial position to its final position. Displacement is a vector quantity, meaning it has both magnitude and direction.

Speed is the rate at which an object covers distance, while velocity is the rate at which an object changes its displacement. Velocity is a vector quantity, and it includes the direction of the motion. The average speed is calculated by dividing the total distance traveled by the total time taken, while average velocity is calculated by dividing the total displacement by the total time taken.

Acceleration is the rate of change of velocity. It can be either a change in magnitude or direction, or both. The average acceleration is calculated by dividing the change in velocity by the time taken.

- Understand the difference between distance and displacement.
- Be able to calculate speed and velocity, and understand the difference between the two.
- Learn how to calculate acceleration and understand its significance in describing motion.
- Practice solving problems involving motion using the equations of motion.

By mastering the concepts of motion, you will be able to analyze and describe the movement of objects in a systematic and scientific manner.

.Physical Science

Energy - A. Energy is involved in all physical and chemical processes. It is conserved, and can be transformed from one form to another and into work. At the atomic and nuclear levels energy is not continuous but exists in discrete amounts. Energy and mass are related through Einstein's equation E=mc 2 . B. The properties of atomic nuclei are responsible for energy-related phenomena such as radioactivity, fission and fusion. C. Changes in entropy and energy that accompany chemical reactions influence reaction paths. Chemical reactions result in the release or absorption of energy. D. The theory of electromagnetism explains that electricity and magnetism are closely related. Electric charges are the source of electric fields. Moving charges generate magnetic fields. E. Waves are the propagation of a disturbance. They transport energy and momentum but do not transport matter.

Relate temperature to the average molecular kinetic energy.