Find the speed of a rock which is thrown off the top of a 20 m tall building at 15 m/s when it makes contact with a bird which is flying at an altitude of 10 m above the ground.

Explanation:

In this case the rock is under an uniformly accelerated motion. Thus, we use the kinematic equation that relates the final speed of an object with its initial speed, its acceleration and its traveled distance.

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

it would be c. predictability