A rock is held above the grounu'nas 100 J of energy. If the rock is dropped,
how much potential and kinetic energy does it have after it has fallen half
way to the ground? *

The answer would be a) -80of

Ithink it’s: light bounce if off a mirror

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached