JAMB - Physics (2019 - No. 88)
Which of the following statements is/are correct for a freely falling body?
I. the total is entirely kinetic
II. the ratio of potential energy to kinetic energy is constant
III. the sum of potential and kinetic energy is constant
I. the total is entirely kinetic
II. the ratio of potential energy to kinetic energy is constant
III. the sum of potential and kinetic energy is constant
I only
II only
III only
I & III only
توضيح
- the total energy at any point is a combination of the P.E and K.E
- the sum of PE and KE at any point is always constant not the ratio of P.E to K.E
- the sum of PE and KE at any point is always constant not the ratio of P.E to K.E