Newtonian Mechanics and Forces

Kinetic energy is defined as the energy that an object possesses due to its motion. Potential energy is stored energy based on position, not motion.

When a balloon bursts, the stored elastic potential energy converts to kinetic energy of the rubber fragments and air. The total kinetic energy increases as potential energy decreases, conserving total energy.

Rockets operate based on Newton's third law of motion, which is a direct application of the law of conservation of momentum. Expelling gas at high speed in one direction creates an equal and opposite force that propels the rocket forward.

When a horse starts suddenly, the lower part of the rider's body moves with the horse, but the upper part remains at rest due to inertia of rest, causing the rider to fall backward.

the motion of a body around a fixed axis without changing position is called rotation.

This is a cleft sentence structure used for emphasis: 'It is [subject] that [verb] [object]'. 'That pulls' correctly completes this construction.

Standing up raises the center of gravity of the passenger-boat system. A higher center of gravity makes the system less stable and more prone to tipping or rocking.

Push is required to move the object forward and pull is required to move the cbject towards itself

Cream is separated from milk during churning due to centrifugal force, which pushes the denser components of the milk outward, allowing the lighter fat globules (cream) to collect in the center.

A body if at state of rest starts moving only when force is applied (first law of motion).

Rubbing gives rise to the generation of static electric charges hence electric force.

Any force which involves the motion of our body is muscular force.

If the direction or the magnitude or both change, its effect will always change.

A force is a vector quantity therefore it has both direction as well as magnitude.