Name and describe the physical and compositional layers into which earth is divided

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Who was the first scientist to measure speed as distance over time?

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.