Answer:
Explanation:
Answer:
Gravitational potential energy:
Kinetic energy:
Total mechanical energy:
Explanation:
The gravitational potential energy is directly proportional to height (). Since there are no non-conservative forces, the total mechanical energy is conserved () and the total mechanical energy is the sum of gravitational potential and kinetic energies. Then:
(1)
If we know that , then we conclude the following inequation for the kinetic energy:
(2)