The reason an object slows down as it rises is due to the transfer of energy from its kinetic energy store to its gravitational potential energy store.
1. Kinetic energy: When an object is in motion, it possesses kinetic energy, which is the energy associated with its motion. As the object rises, it moves against the force of gravity, which does work on the object and transfers energy from its kinetic energy store.
2. Gravitational potential energy: As the object moves higher, its distance from the center of the Earth increases. This results in an increase in its gravitational potential energy. Gravitational potential energy is the energy stored in an object due to its position in a gravitational field.
3. Energy transfer: The transfer of energy from the object's kinetic energy store to its gravitational potential energy store causes the object to slow down. This is because the object's kinetic energy decreases as it rises, while its gravitational potential energy increases.
4. Conservation of energy: The total amount of energy in the system (the object and the Earth) remains constant. According to the law of conservation of energy, energy cannot be created or destroyed, only transferred or transformed. Therefore, as the object slows down and loses kinetic energy, the energy is transferred to its gravitational potential energy store.
In summary, the slowing down of an object as it rises is due to the transfer of energy from its kinetic energy store to its gravitational potential energy store.