A dog and a sled are moving due east together with a velocity of 20m/s ( Vi= 20 m/s ). The dog (with a mass of 20 kg, or Md= 20kg) jumps off of the sled and travels 30 degrees north of east. The sled (with a mass of 5kg or Ms=5 kg) is now headed due south. What is the velocity of the dog ( Vd=?), and the sled (Vs=?) right after the dog jumps off of the sled?