At what distance from the centre of the earth its acceleration due to gravity becomes one third only? [Mass and radius of earth = 6x10 24 kg & 6.4x10 6 m resp.]

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )