The top of a cliff is located a distance (h) above the ground. at a distance of h/2 a bird nest sits on a branch that juts out from the wall of the cliff. one (bad) child throws a rock up from the ground as a second (bad) child throws a rock down from the top of the cliff. which rock hits the nest first if they are thrown at the same velocity, at the same time? (ignore air resistance)

The rock thrown from the top of the cliff.

Explanation:

This is more of a conceptual question. The rock thrown from the top of the cliff will be accelerated downwards, that means, accelerated towards the bird nest, will the rock thrown from the bottom will be accelerated downwards too, but, in this case, this means that it will be accelerated against the direction of the bird nest.

uranium fissions/breaks up giving out energy and neutrons

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.