A bird has ___ to keep them light.
strong bones
weak bones
hollow bones
coloured bones
A hunter spots a bird flying in the sky at an elevation 60∘ from his line of sight. Keeping in mind the speed of the bird, he fires his gun at an elevation 45∘ with his line of sight. However, the bird changes its direction by the time the bullet crosses the bird, the bird has flown down to an elevation 30º from his line of sight. At the time the bullet and the bird are vertically in-line, what would be the distance between them (Assume initial height of the bird from the ground = 2000m)?