science physics

• A body falling freely constantly increases its velocity. Its height therefore decreases quadratically from the point of release since it is falling faster and faster. Mechanical energy depends on an object's changing position and motion or the conversion between the object's potential energy and kinetic energy.
• Electricity is produced by moving charged particles (electrons) within atoms or molecules.
• Electromagnetic waves are transverse waves that oscillate perpendicular to their direction of travel.
• Light travels through space as electromagnetic waves, with different wavelengths corresponding to different colors.
• Newton's third law states that for every action, there is an equal and opposite reaction.
• Light travels at the same speed regardless of its source or direction.
• The speed of light is the maximum possible speed at which anything can travel.
• Newton's second law describes how the velocity of an object changes when it is subjected to an external force.
• Newton's first law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
• The speed of light is approximately 300,000 km/s.
• In a battery cell, there are two electrodes separated by an insulator called an electrolyte.
• Force is defined as mass times acceleration (F = m * a).
• An object's mass determines how much matter it contains, while weight depends on gravity.
• Acceleration is the rate at which an object's velocity changes over time.
• Inertia refers to the tendency of objects to resist changes in their state of motion.
• Inertia refers to the tendency of objects to resist changes in motion.
• A vector quantity has both magnitude and direction, while a scalar quantity only has magnitude.