Force and Motion

Force is a push or pull that acts on an object, causing it to change its speed or direction. Force is directly related to motion, as it is the cause of any change in an object's motion.

Balanced forces occur when the total force on an object is zero, resulting in no change in motion. Unbalanced forces occur when the total force on an object is not zero, causing the object to accelerate in the direction of the net force.

Newton's first law states that an object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an external force. Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Newton's third law states that for every action, there is an equal and opposite reaction.

<p>Heredity plays a crucial role in the classification of living beings as it determines the passing down of genetic traits from one generation to another, which helps in grouping organisms based on their similarities and evolutionary relationships.</p> Signup and view all the answers

<p>Physiological structure refers to the arrangement and organization of various organs and tissues in an organism. It is important for life processes as different physiological structures perform specific functions necessary for the survival and functioning of an organism.</p> Signup and view all the answers

<p>Force is a physical quantity that can cause a change in the state of motion of an object. It can either start the motion of a stationary object or change the speed or direction of a moving object.</p> Signup and view all the answers