How much and how has the kinetic energy of a freely falling body weighing 30 g changed, if its potential

How much and how has the kinetic energy of a freely falling body weighing 30 g changed, if its potential energy decreased by 10 J? What path has this body traveled?

Data: m (mass of a freely falling body) = 30 g (0.03 kg); ΔEп (change (decrease) in the potential energy of the body) = 10 J.
Reference values: g (acceleration due to gravity) = 9.81 m / s2.
1) According to the law of conservation of mechanical energy, the kinetic energy of a free falling body will increase by the amount of a decrease in its potential energy, i.e. kinetic energy will increase by 10 J.
2) The path covered by the body: ΔЕп = m * g * Δh and Δh = ΔЕп / (m * g) = 10 / (0.03 * 9.81) ≈ 34 m.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.