Recent content by Hamish Taylor

  1. Hamish Taylor

    Velocity of Comet at a given distance

    Homework Statement Halley’s Comet travels in a highly eccentric (non-circular) orbit. At its closest approach, it is about 9×10^7 km away from the sun and travels with a speed of 54.6 km/s. What is the comet’s speed when it crosses the orbit of Neptune, about 5 billion kilometres from the sun...