Which of the following statements or expressions is most nearly associated with kepler's first law of planetary motion? (2 points) p2 = a3 planetary orbits are in the shape of an ellipse. a planet moves fastest when it is farthest from the sun. the distance to a planet is proportional to the time it takes the planet to complete an orbit.

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.